Bulk deleting emails from webmail

[#1]

I have been trying to bulk delete all the emails in my inbox (around 2,900).  I am doing what I've done previously and checked the Select All button at the bottom left of the first page and then gone to delete but it's not now working.  PlusNet are telling me my account is within 75% of its limit but I can't sort this.  This is a temporary problem - I forgot to set my iPad settings properly - they werre showing 'Delete from Server' Never!!!    Have sorted that now.

[#2]

I have had a warning too but cannot load my inbox. It keeps giving an error:

Server Error: Failed to send FETCH coimmand

So I can't even attempt to delete any emails! I've been trying all afternoon and not been able to access it. Clearly webmail still has issues. This is why I don't use it very often these days and email builds up. It just takes too long to get in and do anything.

[#3]

I finally managed to get in and have started deleting some emails but now I've got two more error messages:

Connection to IMAP server failed

and

Server Error: LOGIN: Clock skew detected. Check the clock on the file server

I have now wasted somewhere in the region of 3 hours and I've probably deleted about 40 emails. 😞