The signer says the email never arrived:
Almost always host email rather than the plugin. Ask them to check spam, then install an SMTP plugin so mail leaves through a real mail service. In the meantime use Copy Signing Link on the document page and send the link directly, so the deal is not held up.
The send is refused saying a signer has no signature field:
Two signature blocks are carrying the same number. Set the toolbar's signer selector to the number named in the message and insert a signature field where that person should sign.
The send is refused saying the document still contains a merge field:
A placeholder was never filled. Enter a value in the Merge Fields panel and click Apply Merge Fields, then send again.
The signer sees a message saying it is not their turn:
That is correct behaviour in sequential mode. They are invited automatically once the signer before them finishes. If the order does not actually matter, use All at once instead on the next document.
The signature pad will not draw on a phone:
Usually an aggressive privacy browser or extension interfering with the canvas. Ask them to use the Type tab instead, which works everywhere, or the Upload tab with a photo of their signature.
Verify Integrity comes back red:
The stored file no longer matches its seal, which means it was modified, replaced, or restored oddly from a backup. Treat the copy emailed to everyone on completion day as authoritative.
A sent document cannot be edited:
Intentional. An editable signed document would prove nothing. Void it and duplicate it, then send the corrected copy.
A completed document cannot be deleted:
Also intentional, because completed documents are records. The Danger Zone in Settings is the only removal path, and it removes everything.
PRO features are still locked after activating:
PRO carries its own key, entered on its own screen, separate from the core key. Check that the PRO plugin itself is installed and active, then enter its key there.
An AI button says AI is not set up:
Choose a provider and paste a key in Settings, click Save Settings, then click Test connection. AI features do nothing until the connection tests successfully.
The license will not activate:
Check for a stray space in the key. A message about no available sites means you should deactivate the key on a site you no longer use. If it still refuses, open a support ticket.