Hi Mike
Seems to have been a glitch rather than anything more sinister. With heat warnings and train strikes I hadn’t been travelling as regularly as usual and eventually got 4 days worth or refunds after 6 days and then 2 days later got another 4 days worth so it’s all caught up again. When I got the first refund I had to touch in twice, first time I got an error try again message, not sure if that was connected.