I recently had to factory reset my phone, a Samsung GT-S5302 with Android 2.3.6. Now I'm trying to reinstall apps from Google Play store, but one of them says "your device is not compatible with this version" on the play store page. This is nonsense, as it was working until yesterday, and it had been installed correctly and using the official way from play store months ago, on the same phone with the same Android version. Play store, seen from my PC, even still sees that app as installed, but at the same time says it's incompatible.
I contacted the user service of the app and they told me the app is compatible with android 2.3.3 onwards, therefore it's a Play problem. I also already tried to perform the steps suggested in the troubleshooting (resetting play's updates, download manager's cache and all that), with no results.