Hello There!
I made an app to store my dad's office PDFs. I include Firebase and Redis databases in it, which I made a few months ago. Today I opened it to update my database, but when I downloaded the APK my browser is showing virus detected and not downloading it. Please help.
Welcome.
Perhaps one of these links to community discussions about possible virus issues might help you figure it out Search results for 'virus' - MIT App Inventor Community
A guess is you are getting a false positive from your PCs virus checker but perhaps it is a real issue.
What do you use for your virus program? Several virus checkers frequently have problems with App Inventor apps as discussed in the links. The links tell how the developers solved their problem
I don't use any third-party antivirus. And I also turned off my windows defender temporarily.
When I hided the login page it got downloaded at once but after including the login page the issue came back.
Appears something in your log in page is causing the issues, isn't it? An extension? Something else. You do not show images of the possibly problematic code so no one can advise. 