I bought the premium account on android but when my colony grow big the phone became slow so I went on my windows pc.
After I signed in to my account, although the ads were gone, I was not able to build street lights and other premium buildings, despite the fact I could build them on my phone
Is there an option of restoring purchase or something?
it's a bug that was encountered in Antiquitas as well. Your best bet is to use either the .exe version of the game or the Chrome version, until Bast figures out what exactly is causing this incompatibility.
My guess is something in the most recent engine Changes.