Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Careful

I have struggled with this thing for several months. I am using it as a repeater with WPA2 security. It will operate when first configured, but if I turn my laptop off and then back on a day later it won't pick up the repeater -- just the source AP. Power cycling the TEW sometimes works but it's a pain to have to do so. I have downloaded and installed the latest firmware update. The documentation is very thin for all but the basic AP applications. From other reviews, it seems to work well enough for that, but for the trickier stuff you're on your own -- tech support just sends out boilerplate responses.