Please do not use a live credit or debit card when testing Fast Mute’s in-app-purchase functionality, rather use Google’s test cards so no money is taken from you.
When you tap on Fast Mute Advanced Features > then Agree you should see something like this:

When you click the chevron > you should see the list of test cards:

If you do not see Google‘s test cards when trying to test an in-app-purchase, then please leave a message here and I will check that you are on the list of license testers.
When the 14-day test is over, Google will revoke the entitlement and the advanced features will become locked again.
Please do not use a live credit or debit card when testing Fast Mute’s in-app-purchase functionality, rather use Google’s test cards so no money is taken from you.
When you tap on Fast Mute
Advanced Features >thenAgreeyou should see something like this:When you click the chevron
>you should see the list of test cards:If you do not see Google‘s test cards when trying to test an in-app-purchase, then please leave a message here and I will check that you are on the list of license testers.
When the 14-day test is over, Google will revoke the entitlement and the advanced features will become locked again.