Everyone with the Patron role should receive the Donor role, and the bot does somehow do that, but it seems like the bot needs to be online when the user gets the Patron role, so if the bot is offline and a user gets Patron, the user will not get Donor, like, ever.
My suggestion is for the bot to, on a programmed schedule (every day should be more than enough), look at everyone on Patron and make sure they're also on Donor.
Everyone with the Patron role should receive the Donor role, and the bot does somehow do that, but it seems like the bot needs to be online when the user gets the Patron role, so if the bot is offline and a user gets Patron, the user will not get Donor, like, ever.
My suggestion is for the bot to, on a programmed schedule (every day should be more than enough), look at everyone on Patron and make sure they're also on Donor.