Unable to Locate App Proxy URL in New Dev Dashboard

[NickWesselman]

See this writeup on the difference between UIDs and the global extension identifiers –

Simpler app deploys with extension user identifiers

Hello Shopify app developers! As we roll out migrations from Partners to the Next-gen Dev Platform, those of you with extensions in your apps should familiarize yourselves with the necessary migration steps. Among these is the migration to extension user identifiers, or UIDs, in the shopify.extension.toml. These new identifiers change how your local extensions are mapped to their records on Shopify, so it’s worth double-clicking on what is changing here, and why. Why are we making this change? D…

tldr – use shopifyFunction for now to get the needed Function ID