Universal part with little quirks

I have these universal WLAN bought router / client, because I wanted to connect my SmartTV ans wireless network, but I have so far not done so, but have used the device only as a router. But realized that nothing went to dial more than 3 client (notebook), obviously, the TL-WR710N manage only 3 clients. Unfortunately, the instructions say not in it much clients can be managed since. The manual is anyway a bit poor. The transmission power is sufficient to work on 10m by 3 walls. Another practical feature is the built-in power supply and the size.
The use as a client I will test soon and will then continue to report.