Bluetooth operates at 2.4GHz and it's common for 2.4GHz WiFi to interfere with it. However you're saying that switching from 5GHz to 2.4GHz fixed your issue. Are you sure you didn't switch it the other way around? What exactly did you do?
Also, can you explain your comment, "I then somehow linked it with the wifi https://vidmate.onl/", because it makes no sense at all.