Unity recently unleashed an update that is gradually draining money from anyone that makes games with Unity and upload their projects and games, if you're able to, please move the game to a different engine and build from there! To prevent any further loss you might have to remove the download option!

Before you ask for proof, it's best you look it up yourself! "Unity Update Drama" will do!

Thanks a lot for your reminder!
I have removed the download option for now and will make further decisions after gathering enough information.

You're fine until 1st January that's when Unity intent to make these changes, so yeah switching the engine might be the only solution here without being forced to pay to these greedy morons. You need not to take down your downloads or support button, at least for now.