https://support.wati.io/l/en/article/ikyb3db1td-what-are-possible-common-errors-in-embedded-signup-flow
<aside> 🚨 An error occurred while processing this request. Please try again at a later time.
</aside>
This is an unclear error that needs further assistance. The company account creation could have failed for several reasons.
==> If you have this error, please use an active Facebook account or contact support to resolve it.
<aside> 🚨 You have reached the limit of the number of businesses you can create at this time.
</aside>
There is a limit to the number of business accounts you can create.
==>Please use an existing business account or delete/close unused business accounts.
<aside> 🚨 Your Facebook account is too new to create a business account. Please try again in one hour.
</aside>
New Facebook accounts have to wait a while to create a business account.
==> Please use an existing and active Facebook account or wait a few hours before using your new account. The new Facebook account can be actively used during the waiting period.
<aside> 🚨 We limit how often you can post, comment or do other things in a given time to help protect the community from spam. You can try again later.
</aside>
Your Facebook account has been flagged for suspicious behavior.
==> You need to use an existing, active Facebook account with no previous problems.