Macbook trackpad won't physically click

Hi,

One day I've opened my Macbook Pro and I couldn't physically click on the trackpad. The tapping does work, however, no physical click is possible (the trackpad feels hard, like it is resisting the clicking).

What I've tried so far:

• Restarting did not make a difference.
• Shutting down the laptop did not work.
• SMC reset (with Shift, Option and Control buttons with the power button and the laptop connected to a charger) did not work.
• Command and Option with P and R buttons also did not work.

Could anyone suggest what to do next and did anyone had this kind of situation?

Thank you.