We log every user's IP, and only ONE IP has logged in to your account today, and that is from Cable One ISP.
So no one else is accessing your forum account, unless the bad actor also shared an IP with you, which I doubt.
I think you have HF on some inactive browser tab open without you noticing...
Two-step verification will reset every 30 days, so after 30 days, when you visit the forum, it will send you a new code automatically (assuming your two-step verification is via email).
Sometimes Amazon SES IPs are blocked by some firewalls or filters.
https://hetrixtools.com/blacklist-check/54.240.27.123
That's the reason your mail server blocked HF/Amazon SES emails, unfortunately.
We have been using Amazon SES for outgoing emails here on HF for several years now without any changes in the last few years.
https://aws.amazon.com/ses/
There have been no changes to the email configuration for the last few years.
Your account email has encountered "too many soft bounces"...
We do not use the Cloudflare CDN or cache here on HF.
Please clear your cookies for HardForum and then log in again.
For some reason, some required cookies are missing, hence the errors.
You mean forum home https://hardforum.com ?
I cannot reproduce this on:
MacOS via Chrome and Safari
iPhone 12 via Chrome and Safari
Android via Default browser
Looks like you have incomplete download before you open the forum/browser.
Does it happen all the time you visit the forum home?