As for the ConnectClip. From my understanding (which is from last year, so who knows). The ConnectClip REQUIRES at least Bluetooth 4.1 (or maybe 4.2). My motherboard has Bluetooth 4.0 (or 4.1)… Whichever it all is, I’m a version TOO OLD for the ConnectClip to work “reliably” (which means at all) using the bluetooth on the motherboard. So, I bought a bluetooth 5 dongle. I don’t remember the brand, and it’s plugged in and working at the moment so I don’t want to mess with it.
First I will state that I’m not a Bluetooth expert, just a Bluetooth user who uses Bluetooth audio but only since I got hearing aids. Prior to that I always used wired headphones. I have some experience with using Bluetooth to connect computers to expensive special purpose science instruments (by expensive I mean over 50K US dollars). That soured me on using Bluetooth as we had nothing but problems that were resolved by purchasing optional wired ethernet connections - they just worked immediately and without frustrating and time consuming Bluetooth issues.
The technical data sheet from Oticon specifies that the ConnectClip implements Bluetooth 4.2 + EDR (Enhanced Data Rate) and supports the following Bluetooth Profiles:
Advanced Audio Distribution Profile (A2DP) version 1.3
HeadSet Profile (HSP) versus 1.2
Hands-Free Profile (HFP) 1.6 including support for Wideband speech
My iMac Pro supports Bluetooth 5.0 according to Apple but it has not reliably worked with my ConnectClip. My MacBook Pro (2016) supports Bluetooth 4.2 and works with my ConnectClip. I haven’t found what Bluetooth profiles each machine is supposed to support. If I plug in the Sennheiser BTD 800 into either computer and select that for audio, then my ConnectClip works with either computer under macOS or Windows 10.
The specifications for the BTD 800 from Sennheiser are that it supports Bluetooth 4.0 and Bluetooth Audio Narrowband or Wideband A2DP with the following profiles:
HSP version 1.2
HPF 1.6 (version 1.6 adds support for Wideband speech with the mSBC codec)
A2DP 1.2
AVRCP 1.4 (Audio/Video Remote Control Profile).
So apparently my experience is different from yours. My ConnectClip works appropriately with one Bluetooth 4.0 source (BTD 800) and another 4.2 source but fails with a particular 5.0 source.
You might ensure that your 5.0 dongle supports the profiles used by the ConnectClip and that the versions are similar to or higher than what the BTD 800 supports.
Note that Jabra supplies their own USB Bluetooth dongle (Jabra Link 380) with the headset used and recommended by Shelldrake. That USB dongle supports Bluetooth 5.0 including Bluetooth Low Energy, HFP 1.7, A2DP 1.3.1 and AVRCP 1.6.0. Jabra is apparently part of GN Sound A/S who also make Resound hearing aids. Jabra suggest using the provided dongle to ensure good performance that may not always happen with the built-in computer Bluetooth. They offer two basic versions, one certified for Teams and another for Unified Communications (UC) devices, each in two USB formats (A and C). The dongle is available separately from the headset but is more expensive than the older Sennheiser dongle.