If you are able to see the purple icon spinning, but don’t see any underlined mistakes, it typically points to a network issue. Here is what you can do:
Sometimes a simple computer restart helps to flush the connection and fix the issue.
Alternatively, you can try clicking this link. If this does not work — refer to the steps above.
If the problem persists, try using another ISP, connect via mobile internet using mobile hotspot, or using a VPN from a location that is closer to Europe and the US.