@JC Looks like there are two problems here... one, we did make a config change and missed something which is why you're getting the "invalid URL". I've just fixed that and I believe you can now import successfully - please let us know via MSR support if that is not the case (I don't get notifications from this forum so please be sure to contact us directly).
The reason why this problem occurred is because AxTime has been accessing the MSR API over HTTP instead of HTTPS. I'm supposed to sync up with Chris on something unrelated so I'll see if we can get that fixed. It should be a matter of changing a "http://" to "https://".
Brian