Hi AndrewAMD, finally the scripts tries to open another position and I receive the same error, with the .diag file available. Attached, there is the warning message in the Zorro window. As described earlier, the position is indeed opened in the Tradier live account, but Zorro does not reflect it and prints this warning message.
It is a live account session, so I skip the line with the API code:
Do you see anything wrong with the plugin ? Do you think the Tradier API has been updated and the plugin no longer works ? Many thanks for your support.