We have been getting hammered with spammers lately for some reason. Im getting 20 sign ups a day with dodgy emails which I am rejecting so I am sure I am accidentally rejecting genuine people as well.
But long story short, I installed some better anti spam protection and for some reason it stop anyone signing up. And after uninstalling the software it really messed things up so I backed up from the previous days back up.
And being at work I was trying to do all this on my phone during my breaks and I accidentally restored the database as well as the files from the previous day, hence we lost a days worth of threads, sign ups, private messages etc.
I think its the first time in 10 years so we have been lucky.