Activating IPv6 deactivated IPv4

Hi,

I have Libre Elec with Kodi version19.4 on a raspberry 4.

i activated IPv6 through the Interface (Network -> Wired -> IPv6 i guess). After the restart Yatse was not connecting anymore. So i checked on my router if the IP changed, and did not see anything. I checked under IPv6 devices and there it was. I could then connect via ssh (putty) and via webbrowser but not via Yatse.

ifconfig shows me only ipv6 so i guess ipv4 was deactivated. I wanted to have ipv4 and ipv6 parallel. is this not possible?

And how can i change it back to ipv4 (or use yatse with ipv6?).

Greetings,

Sven

ps: if there is already a thread i am sorry i did not find it

Update: i remembered that i once configured my remote control to control kodi. so i could change it back to IPv4.

I saw that ipv4 was set to manual ip and ipv6 to auto. Also after turning off ipv6 and restarting i saw ipv4 was always turned off. found then the button to automatically connect. maybe this was the problem?

Still happy for any tipps what i did wrong.