Some functions of the merchant interface work incorrectly with the Google Chrome’s password manager because of low professional skills of the merchant interface developers.
Particularly, the merchant interface can show a wrong value (your merchant interface password) for the «SHA-IN pass phrase» «SHA-OUT pass phrase» fields.
Please use another browser (not Chromium-based, e.g., Mozilla Firefox) for the merchant interface, and do not use your browser’s password manager at all for the merchant interface website.
Part 1
Log in to the merchant interface, and then:
- Select the «Configuration» item from the top menu.
- Select the «Technical information» item from the top submenu.
- Select the «Data and origin verification» item from the 3-rd level submenu.
- Locate the «SHA-IN pass phrase» text field.
- To see the current value, press the «VISIBLE» button.
- To change the value, enter a new value, and then press the SAVE» button.
Part 2
Set the same «SHA-IN pass phrase» value to the PostFinance’s settings section of your Magento 2 backend: