The port is following your site. I'm very sure because HTTP should be using 43210 and HTTPS is 43211. Alright, I will contact the MSP support team. Thank you for assisting me.

Because of I setup for my client environment.

I'm using https://192.168.02.50:42311 for the URL. I open in Mozilla Firefox and me from Malaysia.

From the main page. You can refer to the image below: