We are aware that some of our users have experienced an issue where their client is charged for shipping when the pickup option is selected in Wix Stores. We're aware of the issue and are currently gathering more information regarding this matter.
In the meantime, please use the following workaround to fix the issue:
1. Manually enter pickup address in a respective shipping rule
2. Change the address in Business Info, so it is a valid address
This article is credited to the Wix team - https://support.wix.com/ and we thank them for that!