We have released a firmware to solve this issue, please download it from here.
http://uk.tp-link.com/download/Archer-MR200_V1.html#Firmware

I have a similar problem with a new Archer MR200. It will not allow an L2TP VPN pass through even though this function is enabled in the ALG tab.

I have downloaded the "firmware to solve this issue" mentioned above but when I try to upgrade, I receive the error message:

Error code: 71211
Failed to upload upgrade file. Please select the correct file.

Model: Archer MR200

Hardware Version: MR200(EU) Ver 1.0

Firmware Version: 0.9.1.1.1 v004a.0 Build 160905 Rel.60037n

Rob

Why no response from support?

Rob

Did you extract the folder after you download it? What's the current hardware and firmware of your router? Is it an EU version as well?

Yes, I extracted the file after downloading. Hardware and firmware is listed in my post above. Yes it is an EU version.

Rob

So STILL no response about this problem from tech support?

Rob

Your current firmware version 160905 is the latest one already. No need to upgrade again. If it is still not working, maybe you can check the VPN server. Is there any other modem you can try?
Or you can send email to support.uk@tp-link.com and tell them the problem. That will be faster to get help.

Thanks for your input Enson. The problem is still there so I will email the support link you provided as the best way to tackle the problem.

Rob