First things first (!) :

Make sure you have completed the install process:

If you are using Themes 1.0 - click Enable

If you are using Themes 2.0 - Follow this guide:

https://support.apphub.com/en/articles/6269052-themes-2-0-how-to-activate-wholesale-bear-in-your-theme

Then - follow these steps to test your wholesale offer:

(1) Copy the offer tag (Important: the tag is case sensitive, copy and paste the exact tag)

(2) Open your Shopify Admin > customers > open the customer profile you would like to test:

(!) make sure to choose a profile you can log into on your end

(3) Scroll down to the tags section, add the offer tag:

(4) Save your changes:

(5) Open the storefront > go to the account login section:

Don't have a sign up / login page?

Follow these steps: https://help.shopify.com/en/manual/customers/customer-accounts

(6) Login to the account you used in step (2).

(7) See the Wholesale Bear widget and click it:

(8) Add products to your wholesale cart and checkout: