yes MR200 can do that

If your provider change IP address then the router should updates IP address on NOIP website. So the problem is the router does not update the correct IP address? Do a ping test, ping the DDNS and...

Is there something wrong with product that you want to fix the problem by updating firmware? What's the current firmware version?

SSH is available only to the Tether app

I can't find it on that website either. Go to the global website. http://www.tp-link.com/en/download/TL-WPA7510-KIT.html#Utility

1. check the “LPR Byte Counting Enabled, http://www.tp-link.com/en/faq-671.html 2. check your printer settings. 3. if it worked fine before, reboot the printer and print server, or reconfigure it.