My site is adding about 100 new users a day, about half are creating subdomain sites:
I cannot access my wp admin panel at all and it appears it is because I have exceeded these limits.
Hostgator says: you are exhausting php's memory limit. I recommend setting up caching for this multisite and possibly removing and unused plugins and themes.
How or what can I remove using ftp to regain access to my wp admin area? Can I remove some of these site?
If I do gain control again, what should I change to limit the high php usage?