After a chat with the developer of this extension I bought it for my clothing store. At first I was only looking for an extension to easily import tier prices (see start of this topic). It has a great import feature next to the configurable product enhancements like advanced tier pricing, preselection etc. I wanted an Configurable Products Extension that also is active on my category page and this is the one to have. I can even see tier pricing on my category page.
Looking for an extension for you configurable products in Magento 2 look no further.
This is the one to have.
Thank you Sandy from Best4Mage for your help on this.