I am running Civi 4.7.22 and iatspayments ext 1.6.1. When I try to edit the settings (Admin>Civicontribute>iATS Payment Settings) my edits won't stick. For instance, I try to edit the email address for notification on failed recurring transactions and submit, but when refreshed the page reverts to previous email settings. Same thing with editing the "Never" to "Always" for receipts.
Anyone with same problem, suggested solutions or troubleshooting thoughts?