@Asmov
Apologies for the small misunderstanding. We cannot provide any kind of region transferring account service where your account is sent back to the previous region. You can however beat the 8 badges of the region to trade the locked Kanto pokemon among your accounts. Do you have any other doubts?
@Hydralisk
Hey there, to uninstall it in PC you just need to delete the whole folder where the game can be found. For android, you should be able to hold the app icon and uninstall it directly or drag it to the "uninstall" option.
Hey there, as Norex said above, could you also provide a screenshot of what Oak tells you? From what I can check, you should meet the requirements. Check if Red is still ontop of Mt Silver too.