Ken Ferguson explains, over at Outspoken Rabbit:
Withers … tried to have the party de-registered with the Electoral Commission. Having failed in this, he turned his attention to the website, not targeting those members brave enough to publicly call him out for what he had done, but threatening the person in whose name the domain was registered. This resulted in comments and posts being closed down and the website was mothballed.
Earlier this week it seems Withers was unhappy that new membership subscriptions were apparently being diverted from the party bank account that remains under his control.
I can confirm the bank details matched those announced by Simon Fawthrop, I updated that page myself and I can confirm the basic story that the web host, someone I consider a freind and a hardworking activist for the party, was leaned on in the manner indicated.
I can also predict, in case it’s needed, that you won’t be receiving any official emails for a while, as the systems are hosted in common at Heart Internet, and my guess is that the account there has closed.