Problem with your sister forum (Adkhighpeaks)

I was logged onto the Adkhighpeaks forum this morning and when I tried to log on again, I got this message:

pwnd by 1337 kilo :sunglasses:
Please upgrade your vBulletin version... this one's vulnerable.

Perhaps related, since I upgraded my Win10, many of my regularly connected links require relinking every few minutes, including the Adkhighpeaks, but not this one.