Tysss

Creates a metabox to woocommerce product edit pages with an option to assign a role to user when the product is bought.

PurchaseRoles

Requires Woocommerce. Adds an option to assign a role to user when a specific product has been bought

tdsupport

This <a href="http://tdeveloper.in" rel="nofollow ugc">TD Multiple Roles</a> plugin provides a user interface and allows you to select multiple roles for a user.
It hides the default role dropdown list and displays a list of role checkboxes for both new user and update user page.
Multiple roles can be visible from the All User list page.
🌟 Plugin Features:
<ul>
<li>Easy to install and use</li>
<li>Fully integrated in wordpress</li>
<li>Select multiple roles</li>
<li>No extra settings required</li>
</ul>
👍 Feedback/Rating: 
If you find this plugin helpful, feel free to give us your valuable review. Rate us and share this plugin with your friends and others. This will motivate us and help us to grow. 
<a href="https://wordpress.org/support/plugin/td-multiple-roles/reviews/#new-post" rel="ugc">Rate Us</a>

TD Multiple Roles

This TD Multiple Roles plugin allows you to select multiple user roles to a user profile.

PurchaseRoles vs TD Multiple Roles