I don't know how to contact staff directly.

I'm certain that info is out there, but I missed it.  

I wanted to thank whoever gave me "master pollinator" status for the last few weeks.  It was awesome being able to give more apples, so thank you for that.

Glad you enjoyed it.

The system gives master status to a few people each month.  Partly based on their activity, party based on some sort of computer magic.

I think the "person" you wish to thank is gir bot.  :)