Unable to connect to Spotify - phantom ad blocker? I'm having issues with the Spotify app. Trying to search gives error messages shown in this Spotify forum. The solution suggested in that thread is to whitelist spclient.wg.spotify.com on my adblocker. I tried connecting to spclient.wg.spotify.com in Firefox and got an Unable to connect error. 

I don't have an adblocker app or extension installed. I tested it out on simple-adblock and found that my adblocker failed to block ads, but on fivefilters, it worked. So I'm not sure what to make of that.

I'm using a Samsung Galaxy S7 running Android v7.0. I installed the ROM myself to get rid of the bloatware that came with the phone by following the instructions here. My best guess is that that ROM is tweaked to have a native adblocker. I think that might have been the case, but I can't remember, having it installed a good few months ago. 

How can I whitelist spclient.wg.spotify.com when I don't know how to access whatever ad blocker is on my phone, if there is one? Can anyone offer an alternative explanation?
Robert got it. My hosts file is full of URLs rerouted to 127.0.0.1. Thanks!