Uploading watch face not possible - garmin does not give a ****

I am really pissed off with how garmin treats developers.
It is known since many, many months that a lot of people have problems when uploading watch-faces to the store:
"Sorry, your message couldn’t be submitted because we’re having trouble communicating with our servers. Please try again later."
I tried all the things I read in the forum, on reddit and so on. But still there is no exact error message and there is de facto no support from garmin.
What are they expecting me to do? To stop programming?

I really don't know why they are not able to manage this...