I was trying to move messages to an empty folder but instead went to my inbox and filtered out other messages. I need them back please

I am sorry, I am a bit confused here. What empty folder? The only option to move messages is to the "Saved messages" folder. You can move them back by clicking on the "saved messages" tab on the left side, select the message and then

I am sorry if I am misunderstanding something here. We did not code the message system, that's a phpBB feature, so I might have overseen some options?

I made an empty saved folder for the messages to go into but it went to inbox instead and it filtered out some messages. They’re gone. I can’t find them anywhere

I think what redk5 is saying is that new PMs came in and deleted old PMs. They created a new folder thinking the PMs would go in there instead and leave the messages in the inboxes alone, but the messages didn't go into the folder and they ended up losing old PMs they wanted to keep.

I hope this is correct and that it makes sense.

It's correct. Sorry I'm bad at explaining things

Ah, okay, thanks for the explanation, now I get it.

I will have to ask starkad whether the PMs can somehow be retrieved, but I don't really think so.
It might take a while as he will have to look into it himself, because, as said, the PM system wasn't built by him.