"Developer Inactive"

My first attempt on the TomTom tiled map server failed with “Developer Inactive”.
my URL looked like: “https://api.tomtom.com/map/1/tile/basic/main/8/136/85.png?key=myapikey&tileSize=256&view=Unified&language=NGT
I cannot find in my dashboard how to activate myself. I used the key from “Dashboard” where there is a green tick before “Map Display API”.
I try adding TomTom to a Leaflet map that is already working nicely with several providers.
I hope its just a simple mistake, any help welcome,

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