sounds like the same issue i "occasionally" get. customers will ring me and inform me they checked out, got charged and never got an order confirmation. ZXPOS is quite useful for these instances, simply log in as customer and push basket through as instore card payment once strip payment confirmed. possible you have not updated the module with the correct files for 2.1 there is a different file set i believe. I think your issue resides in having the wrong version of stripe_create.php (I think that is the correct filename) If you have the wrong file i think your sql queries will be associated to older database namings, the mismatch in names results in a silent failure caused by bad sql query i think?