GTM for enhanced ecommerce

Hey everyone! 

I’m currently configuring the GTM plugin (https://store.shopware.com/en/wbm3958109111964f/google-tag-manager-enhanced-ecommerce-tracking-for-shopware.html) to track my orders with enhanced ecommerce in Analytics… I’ve got everything set up but the most important event doesn’t work; transaction :’) I set it up according the normal enhancend ecommerce guidelines;
Tag type : Universal Analytics
Track type : Pageview
Enable Enhanced Ecommerce Features: true
Use Data Layer: true
Trigger: event equals gtm.dom

But it’s not working… Is there anything I’m doing wrong? Are any of you using the plugin and have set up the transaction tag differently? Please let me know! 
Marouscha