Aight aight aight so the thing is, Kevin does it manually. The "send me a message" thing is from like 2014 when he was more active.
People who donate now might have to wait everything from 1 week to literal months.
Q&A:
Q.Will you get the donator status and perks?
A. Eventually! Everyone does, even those few who waited 5 months and virtually gave up.
Q. Should he update the information on how long it might take?
A. Yes.
Q. Is it unethical to not update it?
A. Absolutely!
Q. Should he make an automated system?
A. Some says he should!
Q. Is it shitty for people giving away money/keys and expecting perks in return?
A. Very!
Q. Will you be compensated for the time it takes?
A. No!
Edit:
Q. What can you do to get it faster?
A. All you can do is wait
Hope this helps!