I just installed Molly on my Pixel Tablet, to use it as a linked device. It works, but when I set up the app for the first time, it said that it couldn't find Google Play Services and asked if I wanted to deactivate battery optimization. This is strange, because I do have Google Play Services installed on my Pixel Tablet, I even use a Google account.
Has anyone found the same behavior on their GrapheneOS Pixel Tablet using Molly? It could be a Molly-specific bug because regular Signal does not allow you to use a tablet as a linked device at all.
Edit: I downloaded the regular version (not FOSS) from Github using Obtainium.