Deleting all shipping options when trying to save APG config

Hi!

When I try to update the table rate (I want to delete one of the shipping options) and save changes, I lose ALL the rates ?? I tried several time with the last version of the plugins, and it persists.

Thanks in advance.

https://www.ads-software.com/plugins/woocommerce-apg-weight-and-postcodestatecountry-shipping/