This is because they have changed their usage model, it no longer goes by token usage by default.
It instead uses some mythical limits that noone knows
If you want to go back to the old version, go to Settings > Advanced and put it back to normal.
However, if you arent hitting a limit message in Cursor you may not need it.
Basically now there are 2 types of refilling limits
short term - stacks up every few hours
long term - stacks up every day?
These are added to your total pool and once you hit you limit rates it stops you from using any more unless you have usage-based pricing enabled.