The issue created while cycling on a wheel on trainer is caused by all the moving and rotating parts. The faster is goes, the more sound it creates. There are a few key factors that play a role in this.
No cadence or resistance
Check if the electronic part of the brake is connected with the midpart. If not, then please check this video how to solve the issue.
In case of clicking sound on the Flow Smart - iFlow, it means that the metal roll has come loose from the softgel.
When the product is still in warranty, we advise to contact your dealer for the repair process.
In case of out of warranty, you can add powerglue between the holes mentioned in this picture.