No. The game should be available immediately as long as you payed the required sum. That sounds like an Itch problem. Contact me on discord so we can look at this together.
About Android: I don't know.
I couldn't produce a working Android build for v0.6.2R and v0.6.3 because of a library bug. I'm still looking into it but I cannot promise I'll be able to compile a functioning build.
So far, you should be able to play it with Joiplay. But I don't think you'll have any compatibility with saves coming from a native build.
I consider Summer Scent like a PC game. The Mac and eventual Android builds are bonuses. The reason is simple: I cannot be sure that I will be able to produce a Mac or Android build with every release.
The game will never become free. I plan to release it on Steam in a few months.