Epson FP 81 II status issue in Italy (xstore / Ops-eur)

A customer has issues when printing the 1st  receipt after executing  a store-open process. Initially 'non-fiscal'  reports are printed on the Epson FP 981 ii from the back-office (BO). Those go fine.

Then the customer logs out of the BO and does a login on the Register and handles the 1st transaction.

When Xstore tries to access the Fiscal Printer sometimes a ' Wrong status'  error message  is being returned other times error '106'= 'Illegal'  is aborting the process.

In the Xstore log there is not enough information to pin-point to what is happening but the only way for the customer to continue is restarting Xstore. We have a feeling that it looks like Xstore is looking into memory to check the status of  the Fiscal Printer instead of doing a check on the physical hardware. We believe it may do something like e.g.