Hama BT adapters have good reputation, so it's probably your 3rd party Wiimote. Only genuine Nintendo wiimotes are guaranteed to work with Dolphin, fake/3rd-party are hit or miss (unfortunately in many cases it's a miss)...
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 16 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)