I'm trying to install 'En Garde!' but when I click install the installation bar and 'Started now' appear for a second or two and then vanish. And I have to click 'install' again. I have enough room. In fact I can install other games but not 'En Garde!'

Is there something wrong on my end?

I'm having a similar issue - the logs show (end of URL redacted to hide any user key/token) :

[2018-07-04 @ 10:45:35.448] [butler] butler stderr: bailing out: htfs.Open (initial request): Get https://w3g3a5v6.ssl.hwcdn.net/upload2/game/xxxxxxxxxxx: http: server gave HTTP response to HTTPS client
[2018-07-04 @ 10:45:35.449] [butler] butler error: htfs.Open (initial request): Get https://w3g3a5v6.ssl.hwcdn.net/upload2/game/xxxxxxxxxxxx: http: server gave HTTP response to HTTPS client

The developer is hosting their game on Google Drive, which we don't recommend. I send them an email to ask them to upload directly to our servers instead. Sorry for the trouble, hopefully they'll get something up soon.

I’m having the same issue but with a completely different game. I’m trying to install ‘Pocket Mirror’ however when I try to it pops up on active downloads for a bit and then makes me have to reinstall it again before making me repeat the whole thing again.