Wait for about 24 hours for all DNS servers to update the information of the new IP.
An example of configuring a domain Add two A-type records (for the main domain and WWW) and specify the IP address provided in the Site Settings.
After changing the IP for the domain, disabling the redirects, and waiting for 24 hours, you can connect the SSL certificate.
Go to the Site Settings → SEO → HTTPS settings.
Click "Manage" and move the toggle switch into the "ON" position to generate a free "Let's Encrypt" certificate.
Wait for 5-30 minutes. The certificate has been connected if see the "secure connection for this website is on" status.
Check whether the HTTPS version of the website works. If you want the website to open using only HTTPS, go to the Site Settings → SEO → WWW, HTTPS Redirects, and select the "Redirect from HTTP to HTTPS" option.
Important: The SSL certificate works only for the websites hosted by Tilda. Once you export the project, the certificate won't work, you need to install it on your server side.