CasaOS + Nextcloud + Tailscale + External Access

Hi…I have CasaOS with Tailscale installed. Nextcloud works locally but I cannot gain access to Nextcloud on other Tailscale Devices externally. I added the Tailscale address to the Nextcloud Config successfully (see pic), yet still no external access. I keep getting SSL errors on external devices. In theory I tought adding the Tailscale IP to the Nextcloud Config should’ve done the trick, but no luck. I also opened the router port for the Nexcloud port. Is Nextcloud just not accessible without SSL certificates? If not, do you have a vid with Nginx and Tailscale installations on CasaOS? Thanks
Nextcloud Config Trusted Domains (CasaOS)

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