I really hope that there is a quick and simple answer to this, I installed Concorete 5 hitch free, it worked well for a few week, I paid some money for some fancy add-ons and it till worked, then one day I come back to it and it simply says "Unable to connect to database." and "A database error occurred while processing this request." and now I can't do anything...

I have no idea at all what changed between when it last worked and now, could the database just start not letting things connect to it, could it have been hacked, is there a way to check the database login details...

I'm really saddened by this because I'd love for it to work perfectly.. any help from anybody, anywhere would be really gratefully received!