Thank you very much for the details, the problem is going to be something else, I'm not sure yet. I'm not able to make changes to the plugin files via FTP, can you please check the FTP access?
The problem I believe is somewhere around getting the document IDs which to be indexed, or the index table size might be simply too big for the server to handle, I'm not sure yet. After I'm able to do some debugging, I will have more information, and hopefully the issue is fixable.Best,
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