Who knows, it depends on how the designer coded the style, that is why it is best to ask them.

Want to check it out yourself Ozzy? I'll hit you up with admin access and you could give it a quick look and I'm sure you would know whats wrong :P. I'll contact the designer too though haha (you're the master Ozzy)

Normally I would, but I am a bit backlogged ATM, so I would not have the time. :(

I understand, it's all good. I just PMed the designer so I'm hoping he gets back to me soon. Me and my fellow admin on the forum made a few tweaks to the style so that could be it as well.

Well install the style again, with a different name, and see if you get the same results.

Install any new plugins or products? make any edits to the templates?

Usually when something suddenly changes, it's because of a change we made.

Alright I'll try that, but what I don't understand is why can guests see the username when an admin can't but then the guests cant see a different last poster that I can... That's just confusing me.

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Yes my partner and I made some edits, mostly him so I'm going to ask him when he gets online and that could fix the issue.

If conditionals are not set right, of the coding is missing tags, that could do it.

Oh ok thanks Ozzy, going to try and get this fixed asap.

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Yeah that must be it, because I just uploaded the original style and there is no problem.

Edit: I figured out the issue is something in the additional.css that my website partner edited and something is not right. I'm not good at coding in any aspect so I can't fix this myself without potentially making it worse, so I'm going to have to wait until he gets back on unless some brave soul wants to take a peak :P