Hey @iTie,
Thanks for posting!
What I would suggest is turning off "Automatically Manage Signing" in Xcode and then manually selecting the profile after downloading it to you local machine and then double clicking it to open it and install it (CMD + O will also do the trick).
You are most likely running into issues since the profile that you are showing in the portal was created by Xcode (XC in the front of the name), but if you have manually modified it Xcode sometimes runs into problems.
Once you have done this you should be able to switch back to Automatically Manage Signing and have Xcode take ownership of the profile again. At least this works for me.
Hopefully this helps!