Filter not working

Dear support,

It is about your great plugin Bulky – Bulk Edit Products for WooCommerce

a few days ago the plugin stopped doing filter, I thing it is because after last WordPress update 6.5.5
for example, I try several filters, but most common it is by category and filter not work

Free version bulky 1.2.6
WordPress 6.6
WooCommerce 9.0.1

I try several things in self-service guide, but without result
how a clean uninstall for this plugin? database included?

tks for helping
regards
Jose