RTF/ODF scan not working - export from Scrivener

Hi,
I have zotero 5 and scrivener 3. I have tried to follow the steps how to use zotero with scrivener and I am failing at the very end. I have exported from scrivener into a odt document, but the rtf scan is not working now.
I have added this zotero-odf-scan-v2.0.37-fx.xpi manually to the translator of my data directory, because the download did not work (found the information in another post).
Do I still need to use the odf scan beta version for zotero 5 or can anybody help me with my problem?
Thanks for any advice!
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