Ah of course – how could they prepare when they had NO warning that hundreds of subs would be going private today?!

Agreed. I had no success using ProtonVPN on Lunix Mint and customer support told me it's not a supported OS, which contradicts their support page. Mainly due to this I switched to Ubuntu and again could not get the Linux app to work, but I managed to get it running with OpenVPN.

Aside from this, their services are fast and reliable and I have no issues on other operating systems.