Can't refuse a hub invitation once clicked


Hi. A friend on FaceIT sent me an invite link to a FaceIT hub by message, and once I had clicked on it on the client, the hub-joining webpage had taken all the client window, making it impossible to close it unless I restarted the client. I closed the window and tried to open the client back using the icon in Windows’s notification area, but I still get the same hub-invitation webpage.
Here’s a screenshot of the FaceIT window after clicking on the link:


Mby you can use Faceit web client because its 2018?!