I factory reset my SM-A300FU with TWRP and lost access to Play Store I factory reset my SM-A300FU with TWRP and I can't access Play Store as it says: "Checking info..." then it says:
At first, we can see you do not have a good internet connection, so that might be the problem. Try getting closer to your access point, connect to another one, or use mobile data. 

If this does not fix your problem, you could try flashing the original firmware of the SM-A300FU with the latest version of Odin

Disclaimer: Neither me nor the Odin developers are responsible for any damage you could cause to your device using this method.