u/MaxViewingAngle

My arctic tern airplus fan stopped opening and closing on its own and emits a high pitched squeal unless I close it manually. Fan works fine. When opening using the knob it seems the effort has gone up recently. I installed it in May, only used it a maybe 20-30 times. I pulled the cover plate, nothing is amiss. Any ideas on what could be wrong?
I didn’t impact anything, the van sits 5 days a week.

Anyone know how to contact arctictern for parts or service info? Any help is appreciated, I have a trip next week