There's a post on Reddit that confirms the outage. The major problem here is their status page that says everything is fine after about an hour and a half of outage.

They have finally updated the Status Page

Not a lot of information, but better than nothing

down for me, and a lot of others

https://downdetector.com/status/protonmail/

Their systems currently report that everything's fine, which - to be fair - could be a misreporting and change at any moment
Anecdotally all their landing sites load fine for me

Tackling it from the other side: could it be a problem with your DNS?
Did you try with another network? Like wifi or mobile data

EDIT: Formatting

EDIT: Tried again and now the email service seems to not be loading

EDIT 2: It is being reported on other sites too, but currently there's nothing official I could find, not even on their Mastodon or Twitter various accounts

EDIT 3: On reddit the volunteer mod alex_herrero wrote an hour ago that "The team is aware and [the] status page will be updated shortly".

It's pretty unacceptable its been down for several hours and their status page says all is good. I get shit happens, but the lack of transparency is making me reconsider paying for service next year.

ProtonPass is also affected.

I'm experiencing this too. Desktop mail + from browser.

Proton mail and wallet are working for me.

It is down here, on the laptop. It is working on my android phone though.

I'm also having issues, today with proton VPN I've been having major delays, I tried hotspotting from my phone and three other WiFi connections and it wasn't until about 20 minutes of trying, changing servers, that I finally got a slow connection. Also my phone internet seemed to be crawling.

Down for me as well 😢 , looks like it loads sometimes but all actions result in errors

Back up here. Ohio, USA

⬇️

I works for me

You didn't pay enough money ;P haha