Ok... I give up.
First I couldnt submit my VAT returns under MTD
Now I get an email from a client with 2 x PAYE penalties. 2nd time he's received this. The first time I rang , HMRC said it was an error, they would tell their 'back room' dept. I have acknowledgement references etc. confirming submission. That was 3 weeks ago.
Another demand. So I thought I'd check online. Get into the PAYE page OK, clicked on each client in turn and ...for each I get:
"Page cannot be found.
If you typed the web address, check it is correct. If you pasted the web address, check you copied the entire address. If the web address is correct or you selected a link or button, contact HM Revenue and Customs if you need to speak to someone."
..Bit difficult to do that at the weekend. I'm obviously going to have a bad time on Monday.