Thank you very much! will contact my internet provider :)

@woozle Hi I experience a similar issue. I did check the adress and it is the same: the openvpn attempt to connect to 100.64.202. 90 while the IP address on the tplink router is 100.64.237.161...

@Kevin_Z Thank you Kevin and sorry for the so-late reply. Eventually, I did reset it to factory settings and that helped. Thanks again!

After updating firmware (tether app notification) my connection is limited. Wire connected laptop says there is internet connection but nothing seems to work. Speedtest could not establish...