Android Wifi Hotspot Error

I just installed volumio on my raspberry pi 3. It automatically set up a wifi hotspot, but when I connect to the wifi network on my android phone, it says that I have to sign in to the wifi network. When I click on that message, it redirects me to the Volumio web interface, but there is no option to connect to the wifi. Also, when I want to vist any website, I get redirected to the volumio interface.
Any way to fix this?

Select ‘Settings’ and ‘Network’ from the UI, then enter your wireless details.

Here you can see the “network” - tab:

Click ‘connect’ next to your displayed wifi network??