Why does unity hub say my personal license is expiring soon???

I thought unity personal is free forever. Why is it expiring soon??

I am guessing every so often you will probably have to go through a license check as its free only under certain conditions. For example if your company is making over a certain amount of money you shouldn’t be using the free version. I am not 100 percent sure but it would make sense that every so often you would have to go through their license check to make sure you are using the version you should be using.