Switching to a different Facebook page takes about a minute.
Step 1: Open a private / incognito browser window. Your normal browser saves your Facebook login and will keep reconnecting the old page.
Step 2: Disconnect your current Facebook account. Go to your Accounts page: https://www.scaledcreator.com/accounts and disconnect Facebook.
Step 3: Reconnect with the new page. Click the Facebook icon, log in, and select the page you want to use.
If you have multiple Facebook pages under the same profile
During the Facebook connection screen, click Edit previous settings, choose Opt in to current pages only, and select only the new page you want. If you skip this step, Facebook often reconnects your old page automatically.
Tutorial: https://youtu.be/nbOWLiLRxCI