Hi, I am trying to create a new sequence of routes on my map, but when adding a new destination, it keeps displaying "loading routes". Please fix this bug if it is an internal issue. Thank you.
MAP NOT WORKING PROPERLY
Thanks for the report! I can confirm this isn't working at the moment.
The developer console shows:
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://pv7nqz4zti.execute-api.us-east-1.amazonaws.com/dev/routes?oPos=<snip>&dPos=<snip>. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing). Status code: 502.
This needs Peter (the admin) to have a look. It's heading into his evening. Might be he'll still see this and can fix in a matter of hours, could be that it'll only work tomorrow again.
Having a look now. It's definitely broken at the moment. Hopefully I'll have a fix for you soon.
No worries. I'm not in a rush at the moment.
You guys make really incredible features, much more detailed and visually pleasing than other products I tried! I'm looking forward to more features coming out in the future. Keep up the nice work!
Have a great day.
Ok, well after much hair-pulling I've got it working again. To be honest, it's not entirely clear to me what the issue was because I tried quite a few different things to get it going again. But it's working for now, so touch wood I suppose ... 
I'm still not seeing any (rome2rio?) routes load. No option for a custom route either. One attempt at a stop at the end of a trip showed a blank list of routes, but another where I tried adding it in the middle hung as before.
However, given the time you're living at: please go to bed and solve it with a fresh brain tomorrow morning! 
Is the AWS URL under your control, or does it belong to your source? I'm seeing x-amzn-errortype: InternalServerErrorException and x-cache: Error from cloudfront
[ Edit: Edited on 17 Apr 2023, 16:47 GMT by Sander ]
I have the same problem, it keeps displaying "loading routes" when I try to add a destination.
Is it because the 3 dollar subscription enabled some advanced features?
It's an upstream issue. I get the routing information from Rome2Rio (excellent service if you need multimodal routing). They tightened up some anti-bot measures on their end yesterday and apparently tightened it in such a way that it stopped working for us. It did work briefly for me last night, but that seemed to just be a coincidence.
I'm in touch with them about it, so hopefully it can be sorted today.
Quoting LZACH23
Is it because the 3 dollar subscription enabled some advanced features?
Just to answer this explicitly. No, it has nothing to do with supporter-only features. This is basic map functionality, which depends on an external service, and that external service broke things for us.
@Peter: Probably good to put in a timeout / explicit fallback on our side, where if rome2rio gives an error / is unavailable, you still show the straight/curved line options. (And some info message about trying later if you care about routing.)