After checking a few other support forum, looks like removing F-Droid from ALL profiles and re-installing is an option many users are able to get it going. For some odd reason, even with the same version, it doesn't work sometimes. I was able to install on the new profile after removing.
Thank you again for the input guys, much appreciated.
I have a total of 5 secondary profiles beside the MAIN (owner profile). My MAIN profile has nothing on it, just the clean install. I have Aurora Store with F-Droid on 2nd profile (No google store); 3rd profile with Google store. Now I am testing something on my 4th profile, I was able to install Aurora and Google store without any problem but no matter what I do, F-droid OR droid -ify OR neo-store; none works. I also created a fresh 5th profile from MAIN profile and exact same issue.
I don't see how I can copy apps from one profile to another. Am I missing something. By the way, my F-Droid is the lastest version, which I downloaded from their official website.
Any suggestions will be appreciated.
I am aware this is an older post with solutions. I followed the instruction but no luck. I checked the f-droid version (ver 1.16.3) and also neo-store. F-droid tells me it's an invalid package; while, neo-store / droid-ify tells me there is a conflict with other package. I can't install any of them on any of my new profile(s).
Any suggestions?