Troubleshooting
"Batch not complete" warning when copying the URL
You can copy early. Here is what recipients see if you send before every row has rendered.
The URL is valid as soon as the batch is accepted. Rows that have rendered show their personalised GIF; rows still in the queue show the design's fallback image until they land. Nothing breaks.
Send early when the fallback is acceptable (a generic version of the same design). Wait for complete when every recipient must see their own version — the completion email tells you when.