Dear Nelson,in this case I recommend that you uninstall the audio drivers;
Access the Device Manager and click on (>) Sound, video and game controllers to expand the section;
Right-click the audio device and select Uninstall Device;
Repeat the same process on all devices listed in the section (>) Sound, video and game controllers;
Go to Settings > Bluetooth and other devices and remove the Jabra Elite Active 75t device again;
Restart the PC;
Go to Settings > Update & security > Check for updates;
Make all pending updates;
Pair the Jabra Elite Active 75t again;
Check if the problem still persists;
See you soon!