Why does TikTok say my phone number is invalid during Shopify integration?

I am trying to connect TikTok and Shopify but it keeps showing me that my phone number is invalid but I cannot show a screenshot.

Hi, @Myst1 .

Welcome to the Shopify Community.

I understand you’re receiving an error message when attempting to connect your TikTok account to Shopify.

In order to connect your TikTok to Shopify, valid warehouse address and phone information are required to successfully sync the product catalog from Shopify. As per TikTok for Shopify - Warehouse Sync resource, you’ll need to provide a valid 10-digit phone number.

If you’ve correctly entered a 10-digit phone number and are still receiving the same error message, I recommend getting in touch with TikTok Support to further review.

I hope this helps!