I'd start with investigating the deprecated option warning which is related to ciphers; if those aren't aligned it will probably explain the authentication failure.
I don't understand what a misalignment of ciphers means or how it yields a depreciated option warning and how, in turn, it would have an impact on the authentication. Or what ciphers are actually
I do have a message out to the dev of the VPN Manager as well, but I found it odd that (according to their github) they have not had a new/updated release in the last 7 months. This just started a few weeks (maybe two months?) ago