I'm also seeing the same.... I even changed my DNS settings to googles like it suggested and still no dice.... Restarted modem and router... and that didn't work either...
I tried legacy mode and that doesn't work either.... I did receive json payload for a few apps... but it just spit it out like a string
{
"apps": 475,
"requests": 726,
"last_updated": "28th August 2017 at 14:00:00",
"last_updated_timestamp": "1503925200",
"applist": [
{
"TemplateURL": "https://raw.githubusercontent.com/linuxserver/docker-templates/master/linuxserver.io/htpcmanager.xml",
"Beta": "False",
"Category": "MediaApp:Video MediaApp:Music MediaApp:Other",
"Date": "2016-08-08",
"Name": "htpcmanager",
"Changes": "[center][img width='300px' src='https://raw.githubusercontent.com/linuxserver/docker-templates/master/linuxserver.io/img/linuxserver_small.png'][/center]\n\n[center][font size=4]Htpcmanager Change Log[/font][/center]\n[font size=4]2016-08-08[/font]\nRebase to alpine linux\n[font size=4]2016-01-14[/font]\nRemove loglevel from run command, user can set in webui\n[font size=4]2015-11-12[/font]\n- Change log level to info\n[font size=4]2015-10-07[/font]\n- Add psutil pip package\n",
"Support": "http://lime-technology.com/forum/index.php?topic=43318.0",
"Description": "Htpcmanager, a front end for many htpc related applications. Hellowlol version.\n [br][br]\n [b][u][span style='color: #
i reinstalled the plugin and tried to pull a few times and it eventually worked? not sure if source for repo lists were down or not