Oops! That should read Epson XP530 and apparently this is supported but the problem remains. The reported count seems a little different stating that 100% This counter has reached its limit........ followed by 0.29% This counter is OK.
This is the code supplied which is reported to be invalid. However, after several attempts, I removed the leading dot and spaces which were always there even when not selected and now all is good.
Not too obvious but now all fixed. Thank You.