We have been experiencing some intermittent problems with the charging of club dinner meeting fees via Mastercard, whereby banks are rejecting payments with the response 'Do Not Honour'. The problem affects only MasterCard charges, and is intermittent. Charges via Visa credit or debit cards, or Amex have not been impacted, at least not yet. I am following this up with the club's payment intermediary eWay for solution. In the meantime, if you have an unexpected rejection, keep trying as it usually goes through after two or three tries. Also please let me know if you get a chance: Email me and let me know how you go.
The sudden problems coincide with the club enabling payments via Amex, and a change made by ClubRunner to our event booking page. I am not sure if the two are related, but am following this enquiry up with both eWay and ClubRunner for a solution.