Test We are going to copy and paste the IPV4 address into your browser, the log in of your node should appear, in my case it is umbrel. With this we know that there is a connection with our node.
Connect tailscale to Cove Wallet
On our device, open the Cove Wallet app and select the three lines in the top left corner. Then, select Settings > Node > Electrum Custom. Paste the IPv4 address and add 50001 to the end, this is the port used by Electrum on our node. You can also use magicdns and add port 50001 to the end. For example: http://200.200.100.81:50001
e.g. url node
If everything is ok you should read a connection notification.
Success notification
Important considerations -Wallets are updated and only work with IPv4 when tailscale is enabled. -Tailscale keys expire, pay attention to updates and repeat the process.