Hi Mehmet, I would hope you would open a support thread before leaving a 1 star review, to try and work out the issue. Our plugin is used and deactivated on thousands of sites, and this is the first time I’ve heard of an error on deactivation.
It’d also be helpful if you included the error message so we could troubleshoot it, and try and fix any issues there may be.
If you’d consider revising your review once we’ve had a chance to address any errors I’d appreciate it.
Rob