Well I was stupid not to look for the obvious. The coinpayments plug-in had gone – must have removed it by accident I suppose. I re-installed it and it seems ok now. One thing I am wondering, with coinpayments the missed payments must be in coinpayments somewhere, not lost, just not registered in the wallets plug-in? Have you written anywhere a layman’s summary of the relationship between coinpayments account and the wallet adapter? I assume the payments will be somewhere available in coinpayments even when something goes wrong with the plug-in (or its user!)
Thanks and sorry for wasting your time!