Hello.

While browsing users' profile, I noticed that quite often the date of profile creation is subsequent to the date in which the first run was submitted.

Sometimes by months or years, so it's not a timezone issue.

Is it a bug? If so, how can I avoid it when I create a profile? It's not really a huge issue, but I'm planning to create a new profile and I'd like it to have somewhat accurate information.

Thank you for your attention.

having multiple accounts on the site is not allowed

This is probably the one thing you shouldn't be worried about at all. When the profile was made has no bearing on when first run was done by you or anyone.