I have a range extender from tp link (AC 750, R200). It worked perfectly for a couple of months, but after a recent "upgrae" of my Linux Mint XFCE operating system it cannot connect to the Internet, or it does connect, and drops it almost immediately. The weird thing is that under Windows 10 running on the very same hardware (Yoga 2 Pro) it works just fine, and the same is true for my Samsung S9+ phone (Android 9). I suspect, therefore, that the "upgrade" had changed something, but I don't know what. I could not find the little manual that came with the devicee, so I don't know how to reset it. Unplugging it, or pressing the resset button did not cure the issue.
I want to continue to love it-- please help!