If, as you say, direct audio streaming worked before, I would wait a bit. Maybe a future update of your phone will fix the problem that the previous update caused.
Unless you want a new phone anyway.
I have Samsung S22 5G, which is on the list of compatible smartphones, with Android 13 and UI 5.1, and when I try to pair and connect to my wife’s ReSound Customs, sometimes only one hearing aid is discovered.
So the latest “compatible” phones are not a guarantee of flawless operation.
I think the BT LE technology is still in nappies.
My wife has Samsung A71 (not on the list), Android 13 and UI 5.1, and she connects to her HA’s OK, the connection will be there for a few days, and then Bingo. Once I did everything I could think of, but the app would see the HA’s, but not connect.
Then I did “Restart” (not Power OFF) - the green button, and that fixed the problem. For the time being.
BUT: my wife does not do audio streaming. Just control. I do not know if streaming would work.
I have had an exchange of emails with the Smart 3D developers, and they claim that having Android 12 or 13 and ASHA does not necessarily make the system work.
It is the implementation of it that matters.
Their policy of making their app compatible with only the most expensive line of smartphones is a shame.
They could have developed a new app for those who have the money, and leave the older versions for those who were happy with it and have lesser smartphones.
That’s the world we live in. ReSound wants to have cutting edge technology - audio streaming. etc.
Forgetting that hearing aids are medical devices, forgetting that most users are older people who just want to have reliable remote control.