Sure!
We don't agree with itch.io's non accumulative payments system.
To do that, we need you to reach us to taifunriders@gmail.com or on Discord.
https://discord.gg/VfykcYhxuw
We've already checked you did a 2$ payment and another 10$ payment before.
After contacting with us, we'll ask you to make the reamining 3$ payment, so we can give you an access key for itch.io. That way you will be able to access the game and all its remaining updates.