@PeerB 

The print servers, the application scenarios and platforms, are based on traditional desktop operating systems (windows, MAC, Linux and so on). The compatibilities about these systems are very clear on our website.

Therefore we do not suggest to use our print servers with mobile devices, cause we cannot guarantee they will work properly with mobile devices.

However, if you have such requiremen, there are two APPs you can download to give it a try. They are ePrint and PrintHand.

Please notice that they are paid APPs. ePirnt is applied to Android and IOS systems and the printing protocols are LPR and RAW.

PrintHand is applied to Android, IOS and windows Phone and the printing protocol is LRP.

May it help. 

@Kevin_Z 

The reason I use the printserver is that the TP-Link router does not work together with my HP WI-FI printer. It cant connect via WPS.

So I saw the printserver as a workaround to this problem.

I am very disapointed that my new TP-Link Archer C7 is outdated. My old wifi router works fine with my commonly used HP printer.

Printing from mobile has been normal  for several years with my old wifi router, so it is disapointing that TP-Link is selling products that dont support this. 

I will have to return my TP-Link Archer C7

And I recommend TP-Link to call this product back.

I cannot recommend the use of TP-Link