Hi, this is a DIY question and I am not sure if category is a suitable one.

I have a tempered glass sliding shower screen installed for my bathroom more than 10 years ago and now one of the section is stuck. I am guessing the little wheels are damaged and would like to unhinge/detach the door to fix them. Most of the DIY videos for other models of sliding doors shows that the sliding doors can be unhinged from the rail by lifting the door sections. I am not able to lift the doors at all even after removing the clips at the bottom of the door.

Can anyone who is knowledgeable about this share how can I detach the doors? Here are some pictures of the sliding shower screen:

Top of the shower screen:


Top rails:



Bottom of the shower screen: