Device Tracker TP-Link - keeps logging out of router admin interface

Hi all,

I have setup the Device Tracker platform to my TP-Link Router and it is working. However, I found that it seems it login and logout on the router repeatedly based on the scan interval so the console shows the message continuously:

INFO:homeassistant.components.device_tracker.tplink:Loading wireless clients…
INFO:homeassistant.components.device_tracker.tplink:Logging out of router admin interface…
INFO:homeassistant.components.device_tracker.tplink:Retrieving auth tokens…
INFO:homeassistant.components.device_tracker.tplink:9a6294eb4007fc393e1af85bcfdda5a2
INFO:homeassistant.components.device_tracker.tplink:2d869fb6316755dccc80fdd21764522a
INFO:homeassistant.components.device_tracker.tplink:Loading wireless clients…
INFO:homeassistant.components.device_tracker.tplink:Logging out of router admin interface…
INFO:homeassistant.components.device_tracker.tplink:Retrieving auth tokens…
INFO:homeassistant.components.device_tracker.tplink:192f5690e2b74dd4f9128701243912d0
INFO:homeassistant.components.device_tracker.tplink:0a16b4ccd3691d0fbb6ad12940f463bf

My question is that is it normal and can we avoid this as it looks like it is drawing resources on both HA and the router? For example, it is possible to keep the connection/login always on?

Many Thanks!