Glad to hear you figured it out.
Qdabra Software, creator and maintainer of InfoPathDev, has a quick and easy top install FormsViewer App that replaces InfoPath (but let's you continue using the form's you created using it). You can find the app in the SharePoint App Store. In addition, mobile views will look beautiful if you add a CSS resource. That literally takes 10-15 minutes. Best of all, cost is lowest by two orders of magnitude - you don't have to recreate your forms in Power Apps, and FormsViewer will always be usage-based and tenant-wide. Plus, InfoPathDev posters are eligible for special discounts! :)
Here's a link if you're interested: https://www.qdabra.com/en/products/FormsViewer.aspx. The second short video shows how to add the CSS to make your form's responsive for mobile devices.
I'm happy to show a quick demo.
We're working on the form designer replacement for InfoPath Designer now and hope to have an initial version ready by early next year.
Cheers!