Aiuto urgente grazie

Salve,
ho una vecchia app fatta con APPYBUILDER, ho dovuto fare una piccola modifica, l'ho compilata in offline ovviamente con Java\jdk1.8.0_231, ma quando vado ad aggiornare l'app esistente con la nuova versione mi dice "App not installed" ???

ho notato queste anomalie in WinStartBuildServer ma non riesco a capire come risolvere...???:

INFORMAZIONI: The current progress is 95%
dic 15, 2021 2:10:01 PM com.google.appinventor.buildserver.Execution execute
INFORMAZIONI: ____Executing C:\Program Files\Java\jdk1.8.0_231\jre..\bin\jarsigner.exe -digestalg SHA1 -sigalg MD5withRSA -keystore C:\Users\Tony\AppData\Local\Temp\1639573785631_0.5116136697849112-0\android.keystore -storepass android C:\Users\Tony\AppData\Local\Temp\1639573785631_0.5116136697849112-0\youngandroidproject..\build\deploy\MESOJET.apk AndroidKey
jar signed.

Warning:
The signer's certificate is self-signed.
The MD5withRSA algorithm specified for the -sigalg option is considered a security risk.
dic 15, 2021 2:10:02 PM com.google.appinventor.buildserver.Execution execute
INFORMAZIONI: ____Executing C:\Users\Tony\AppData\Local\Temp\zipalign339152791642573932 -f 4 C:\Users\Tony\AppData\Local\Temp\1639573785631_0.5116136697849112-0\youngandroidproject..\build\deploy\MESOJET.apk C:\Users\Tony\AppData\Local\Temp\1639573785631_0.5116136697849112-0\youngandroidproject..\build\tmp\zipaligned.apk
dic 15, 2021 2:10:02 PM com.google.appinventor.buildserver.Compiler runZipAlign
INFORMAZIONI: ZIPALIGN time: 0.075 seconds
dic 15, 2021 2:10:02 PM com.google.appinventor.buildserver.Compiler setProgress
INFORMAZIONI: The current progress is 100%
dic 15, 2021 2:10:03 PM com.google.appinventor.buildserver.BuildServer build

(compiling C:\Users\Tony\AppData\Local\Temp\1639573785631_0.5116136697849112-0\youngandroidproject..\src\com\appybu
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:122:3: warning - more than one possibly applicable m
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:125:3: warning - more than one possibly applicable m
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:702:7: warning - more than one possibly applicable m
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:704:7: warning - more than one possibly applicable m
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:714:9: warning - more than one possibly applicable m
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:719:7: warning - more than one possibly applicable m
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:721:7: warning - more than one possibly applicable m
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:727:11: warning - more than one possibly applicable
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:729:11: warning - more than one possibly applicable
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:735:9: warning - more than one possibly applicable m
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:737:9: warning - more than one possibly applicable m
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:747:9: warning - more than one possibly applicable m
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:766:9: warning - no accessible method 'addParent' in
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:1124:3: warning - no accessible method 'runtimeFormE
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:1861:3: warning - more than one possibly applicable
candidate: com.google.appinventor.components.runtime.util.YailList com.google.appinventor.components.runtime.util.
candidate: com.google.appinventor.components.runtime.util.YailList com.google.appinventor.components.runtime.util.
candidate: com.google.appinventor.components.runtime.util.YailList com.google.appinventor.components.runtime.util.
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:2543:5: warning - no known slot 'getDhcpInfo' in jav
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:2565:3: warning - no known slot 'post' in java.lang.
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:2599:5: warning - no accessible method 'clear' in ja
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:2603:3: warning - no accessible method 'setFormName'
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:2610:7: warning - no accessible method 'deleteCompon
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:399:39: warning - no known slot 'getMessage' in java
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:400:66: warning - no known slot 'getMessage' in java
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:400:28: warning - more than one possibly applicable
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:400:27: warning - no known slot 'show' in java.lang.
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:404:15: warning - no known slot 'getMessage' in java
(compiling C:\Users\Tony\AppData\Local\Temp\1639573785631_0.5116136697849112-0\youngandroidproject..\src\com\appybu
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:399:39: warning - no known slot 'getMessage' in java
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:400:66: warning - no known slot 'getMessage' in java
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:400:28: warning - more than one possibly applicable
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:400:27: warning - no known slot 'show' in java.lang.
C:\Users\Tony\AppData\Local\Temp\runtime6789123726729022859.scm:404:15: warning - no known slot 'getMessage' in java
_______Invoking ApkBuilder to build: C:\Users\Tony\AppData\Local\Temp\1639573785631_0.5116136697849112-0\youngandro
Build finished in 16.727 seconds

dic 15, 2021 2:10:03 PM com.google.appinventor.buildserver.BuildServer build
INFORMAZIONI: Build error output:
dic 15, 2021 2:10:03 PM com.google.appinventor.buildserver.BuildServer checkMemory
INFORMAZIONI: Build 1 current used memory: 22779776 bytes
dic 15, 2021 2:10:03 PM com.google.appinventor.buildserver.BuildServer$1 run
INFORMAZIONI: CallbackURL: http://localhost:8888/ode2/receivebuild/d79ammf7t01j06chsd60946cw62ff1i9s3ph4v342ledm3weun8483369wbfp3h3pq3rjgocuetemf3mt3t2vf4dlaeo1a2b4w84zhaezcma41tmq3bqn8xilw5ph7ealzkxh0kjnp/build/Android
dic 15, 2021 2:10:03 PM com.google.appinventor.buildserver.BuildServer checkMemory
INFORMAZIONI: Build 1 current used memory: 22290736 bytes
dic 15, 2021 2:10:03 PM com.google.appinventor.buildserver.BuildServer checkMemory
INFORMAZIONI: Build 1 current used memory: 22277208 bytes
dic 15, 2021 2:10:03 PM com.google.appinventor.buildserver.BuildServer$1 run
INFORMAZIONI: BUILD 1 FINISHED

If you've previously built an app with the same package but on a different service, it will likely be signed with a different keystore than the original. All you need to do in this scenario is uninstall the old version entirely from your device and then install the new APK.