Constant Error Code 630?

So, I've been getting the same error code over and over, is it due to my ISP being dumb or is there another reason?

Most likely, it is the ISP. Something may have happened to a network between you and the servers causing issues.

@Ragnawind Well, I contacted my ISP, again, seems like I'm going to be running in circles for a while since they said they haven't detected any problems. My computer ran this game perfectly fine until after the maintenance was done for the reason behind the personal shops being down.