@Gertjan Previously, swapping locations would sometimes still get TLS errors, but that was due to not separating the CA authorities, like you did in your photo. Thanks for capturing that. Now, as of 11 April at least one .ovpn file (chosen at random) downloaded without the second CA. Fortunately, by offering just the CA 3 that matches your photo, it all works again. The authority now expires in 2124, and certificate 2066 as you documented. With that, reviewed all settings, and that finally resolved the TLS errors/cert expirations/or connection failures. ExpressVPN / pfSense immediately connect. Everything is looking great. ***While at it, another major company has Certs expiring this summer too (related to secure UEFI keys for booting). So, ensure auto update / latest updates are on for systems/devices before the expiration this summer. Auto update seems to be the preferred route.