@Gorilla72 Try to clear the site data for this site on your offending device. After that, signing in should stick? Unless you changed your policy on retention of cookies or something for all sites?
https://www.imore.com/how-clear-all-website-data-safari-iphone-and-ipad ↗
I'm not an iphone user, but something like what is described in link should work (same functionality as android, I'm assuming, being able to eliminate cookies for a specific site)
@nuleafjhawk yeah the forgot password emails arent currently working. The site is configured to use a 3rd party that used to do free emailing, but they now only offer paid tiers of emailing. Hopefully, with a board upgrade, nodebb defaults to a free emailer again? I'll look into it with upgrade.
Try to do the same thing as I told Gorilla if you know your credentials but they arent working. If you dont know your credentials, email me from the email you have on record for your account (to approxinfinity@gmail.com) and I'll reset your password and send a temporary one to that account.