Non-funded accounts will not be able to log in

In case you've been using MF Pro or any other sports bot with a zero account, here is a big warning for you (quoted from BetFair's newsletter):

On Thursday 25th July, we are making a change to the Betfair API that means that only customers with a funded account will be able to log into the API. Customers that have never funded their Betfair account will receive the error PRODUCT_REQUIRES_FUNDED_ACCOUNT when attempting to login.

Note the word "never" in the context. Go and deposit at least £5 to be able to keep using the bot.

Thanks for the heads up. better be safe than sorry.