Garmin has offered a potential solution to the problem, involving resetting the device and connecting to a Garmin app.
But it concedes that this alone may not solve the problem, and in that case it is advising people to factory reset their device.
Some people on social media have claimed that even after a factory reset, they are unable to get their smartwatch to function properly.
"Their instructions don't fix it and Garmin are silent," one person said in a post on X.
And Absolute Radio DJ Leona Graham is one of the people to share their frustrations online, along with footage of the blue triangle.
