You never exactly indicated how it won't let you log back onto your PSN. Do your details not register as correct, does the login tab simply not load? You could try making a new ps4 system account and seeing if you can type in your details from there.
Well there's also the fact that I have had uni as well as the fact that I am now dealing with employment. I just don't have the effort or spare time to dedicate myself to the crew like I use to though there is still the small band of close mates I play with who are crew members.
Yeah, it defo got me to come back and give GTAV another few goes and to see what will happen from there. Though it is the disappearance of many of my members due to all the new games and fatigue plus a lack of new recruits that reduced my interests on GTAV. Oh well, a 4 year run isn't so bad.