I can't find the settings / API page
Most likely your user is not an admin. Ask the person who owns the account (often whoever pays the bill) to follow the steps, or to make you an admin.
The tool says my plan doesn't include API access
Some tools only give API access on paid plans. Each page shows the plan needed. Tell us before upgrading: sometimes there is another way.
I closed the window and can't see the key anymore
Normal. Many tools show it only once. Delete that key and create a new one.
There is already a key. Should I make a new one?
Yes, make a new one named Uplifted Consulting. Don't reuse a key another tool or agency is using. If the tool only allows one key, copy the existing one instead of regenerating it: regenerating breaks whatever uses the old one.
The OneTimeSecret link says it has already been viewed
Only we should open it. If we didn't, someone else did. Delete that key in the tool, create a new one and send a new link.
I'm not sure I copied it correctly
Send it anyway. We will test it within a day and tell you if it doesn't work.
The screens look different from the guide
Tools change their design often. Look for the same words (Settings, API, Developers, Integrations). Still lost? Send us a screenshot.