Only ask for that permission for devices < Android 11/ API Level 30
For example my tools extension offers a method for that
If api level < 30
Then ask for write external storage permission
Yes
Your question was
Use te MFile extension as mentioned earlier
Also be aware to not edit the file outside of your app... this will change the ownership and further append file attempts will fail... if you need this you will have to use SAF...
Also let me suggest you to clean up your blocks... and why are sone blocks black and grey?
Taifun
