Thanks for help me testing.
You're very welcome and massive thanks for adding a feature that allows me to ditch a service that requires attaching an email.
Now I added a notification icon, which will make a sound and call you back to the page (you need to grant permission for notifications).
I also changed the title of the page with (1), so you know some notification is there, which will disappear after you click on the notification.
I believe there are no bugs left, and it will call you for more incoming transactions.
Yes, I can also confirm that the bug I mentioned earlier no longer exists, but for some reason, I think the browsers that I use are misconfigured because no matter what I do
[adjusted the permissions and emptied the cache + hard reload], I can't hear any sound notifications
[fortunately, the title changes now, so that's good enough for me (thank you once again
)].