Thanks for your response! My version info is below. I sent an email to Proton support around the time I made this post. (This is speculation, but given how many upvotes the post has in a low-traffic community, maybe I’m not the only one experiencing this.) I will share here what I learn from Proton support
Mac OS 11.3.1.
Proton VPN 3.3.4
Probably. I’ve noticed more servers added in new countries and new servers added in Canada in the last couple months