cURL error 7: Failed to connect to api.h5p.org port 443: Connection timed out

Hi guys

Since end of september I have the following error when trying to update the libraries:

cURL error 7: Failed to connect to api.h5p.org port 443: Connection timed out

Couldn't communicate with the H5P Hub. Please try again later.

I havent changed anything regarding the server configuration (shared hostind backend for me is limited of course, I use a valid lets encrypt certificate for https) and I am discussing the problem for weeks now with the technical support as it worked in July and August without any problems! Installing on free hosters (host*nger, b*ethost e.g.) works flawlessly, but my paid hoster support (hostt*ch - located in Switzerland) argues they cannot establish a connection to api.h5p.org in a standard configured wordpress. It neither works in Moodle for me, so they believe it must be a h5p-sided problem. As I can see, some other people have the exact same problem. 

Could anyone please help us? 

Thanks for your efforts!