https://developers-portal.faceit.com/docs/8/ contains an incorrect link to the API explorer
https://cdn.faceit.com/widgets/sso/index.html will loop indefinitely if opened with an Adblocker (tested with ublock), https://cdn.mxpnl.com/libs/mixpanel-2-latest.min.js seems to be the culprite.
https://open.faceit.com/data/v3/matches/:id doesn’t find matches from Hubs
The API Explorer should probably document the possible values for match.state
Thanks for your great work!