Locationiq maps not showing

I have gone through the docs/forum and set up a custom map and bing maps.
But still have no map on locationiq earth and hybrid.
I there some config that I still need todo?

Thanks

1. Have you configured an API key for it?
2. Does your plan with them support it?

I did find this https://www.traccar.org/locationiq/
No I have not configured my API in the config file
What is the syntax?

I think my plan will support it.

Have you checked other forum threads?

https://www.traccar.org/forums/topic/415-new-map-layers/

All the screen shots on that tread do not work.
What would be the syntax?
Thanks

Comments should have enough information.

I entered the config like this:

<entry key='locationIqKey'> api-key </entry>

And then restarted server.
Map still don't show. Is there something I need to change?

You should use server attributes, not the configuration file.

Thank you.
Also can I config the map list, as in removing some of them?

There's no configuration for it, but the source code is open, so you can easily remove the layers that you don't need from there.

Thank you