Step 1: Go to Admin -> Plugins -> Search Targetbay -> Click Deactivate -> Remove the plugin from this site.
Step 2: Plugins -> Add New -> Search Targetbay -> Click to Install & Activate the plugin
Step 3: Targetbay -> Check the Targetbay API Secret from Backend as well as Targetbay Account.
Step 4: Go to Targetbay Account -> Click Settings -> Connect Website
Step 5: Kindly hit the below URL in the browser & check the API is the same.
URL: https://app.targetbay.com/account/shopify/connect
Step 6: Go to Admin login -> Woocommerce -> Settings -> Advanced -> Rest API
Step 7: Go to Targetbay Login -> Settings -> Connect Website -> Check the Consumer key is the same
URL: https://app.targetbay.com/account/woo/connect
Step 8: Go to Admin Login -> Woocommerce -> Advanced -> Legacy API -> Enable the checkbox -> Save Changes.