Plugin doesn’t keep the order

Hi, I installed ReOrder because I needed to have the products sorted in a custom order in each product category.

After sorting and verifying it in the front end, I noticed that after some time the sorting was lost and returned to the default one.

I don’t understand what is causing the issue. I assumed it happens whenever a change is made on a product belonging to that category, but I am not sure.

Thanks for any feedback on this.