Thanks Mel & Callum, So… it is broken. Frustrating! The buyer has indicated he was happy for me to counter offer and he’d accept. The option to counter was not there so fish off the hook. Grrr
Someone made me an offer. The only two options were to accept or reject. I rejected the offer expecting to be able to make a counter offer, but no option appeared. Is this due to the current upgrade disruption?!