I get this message when trying to send pm' sand email to tell me I need to delete some pm's

I've deleted pm's, logged out and back in and given it 24 hours since the deletions (just in case something needs time to refresh)

Still no joy, can't send a pm to mods with the query (obviously) and no email contact details on the site for any other way to contact mods

Can one of the mods check this out for me

Thanks
FT