spotify - app only offline mode, webplayer no music

So, the issue was RegEx. After consulting this article, I figured out how to write it correctly (I suppose, I'd be very thankful if someone could confirm that this RegEx works as supposed to and doesn't allow to much!).

Port 4070 hasn't to be opened for the web player of Spotify, only for the app. Streaming works with just SSL-check skipping for the following addresses:

^https?://([A-Za-z0-9.-]*\.)?spotify\.com/
^https?://78\.31\.8\.[0-9][0-9][0-9]
^https?://193\.182\.8\.[0-9][0-9][0-9]
^https?://194\.68\.28\.[0-9][0-9][0-9]

I would have said:

^https?://[A-Za-z0-9.-]*spotify\.com/
^https?://78\.31\.8\.
^https?://193\.182\.8\.
^https?://194\.68\.28\.

Cheers - Bob

Spotify ips:
78.31.8.0/21
193.182.8.0/21
194.68.28.0/22
from Here. approved here.

I use this pattern for SSL-check skipping:
^https?://([A-Za-z0-9.-]*\.)?spotify\.com/
^https?://([A-Za-z0-9.-]*\.)?scdn\.co/ (because spotify is just the "referer")
^https?://78\.31\.([8-9]{1})\.([0-9]{1,3})
^https?://78\.31\.1([0-5]{1})\.([0-9]{1,3})
^https?://193\.182\.([8-9]{1})\.([0-9]{1,3})
^https?://193\.182\.1([0-5]{1})\.([0-9]{1,3})
^https?://194\.68\.2([8-9]{1})\.([0-9]{1,3})
^https?://194\.68\.3([0-1]{1})\.([0-9]{1,3})

Works fine, so far...

Works perfect for me! 

I've been trying to isolate this issue for a while. Finally was able to get it to work. Only exception for HTTPS decryption I needed was: ^([A-Za-z0-9.-]*\.)?scdn\.co/?