Advise the customer to import reviews in batches of 100.
Things to do if the above steps fail
1. Inform the customer that you need to engage the development team for assistance. The development team might need collaborator access to the store and they will get back to the customer over email. Gracefully end the live chat.
2. Send an email to contact@zegsu.com with the issue description and the chat transcript.
The subject line should be: AliReviews - Import Issue - <shop name>