The inability to pull the rolling shutter beads may be caused by various reasons.

Firstly, check if there are two beads merging together between the pull beads, or if the spacing and fit of the head are low.

Secondly, check if there are any foreign objects blocking the track, such as dust, debris, or detached parts. If there are, clean up any foreign objects inside the track. In addition, prolonged use may lead to increased friction between the beads and the track. In this case, a small amount of lubricating oil can be applied to the track to reduce friction. If none of the above methods can solve the problem, it may be due to damage or deformation of the springs or other mechanical components inside the roller blind. In this case, it is recommended to contact professional maintenance personnel for inspection and replacement of the damaged components.