Bumping in case someone might have an explanation of there own or has this issue as well and needs an answer of some kind.
If anyone is having issues with the 630 error, you can try dumping your inventory into storage and see if that works and staying in base wear and unequiping weapons/camo.
I made a new character in the same Ship and they connect to NGS just fine. So it's leading me to assume it's an inventory item or camo that's causing me to be unable to get into NGS with the other character. I removed any outfits and camo's I had from base PSO2 and sent some items to storage.
I am now able to get into NGS again with the character I had issues with. It's belief there's either
-An issue with too many items from base PSO2 carried over in the inventory or causing some type of interference
-An issue with outfits/weapon camos (which iirc are locked to their respective games and can only be used seperately for both versions)
-A specific item blocking it