I cannot even visit cloud.mongodb.com. When I tried to connect with mobile hotspot I can visit.
I was able to visit the cloud.mongodb.com page no issues on my end. I believe it may be an issue with your initial internet connection (I presume the one before you connected via mobile hotspot) so you may wish to contact your network provider / administrator regarding the issues connecting to the domain mentioned.
Additionally, I have checked the cloud status page and there have been no recent issues noted.
Regards,
Jason