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The app is unable to display Chinese characters properly even I reported the case to the support but it is not fixed after a week. Moreover, it's always hard to download the big catalog file as my shop is having few hundreds of items.
UPDATE 20. April 2021.
We finally solve all the problems with characters and you can use our app without any issues now. Please check: https://pdfdocs.nyc3.digitaloceanspaces.com/rZe6Z.pdf
Hi. Sorry for the problems with the characters. The size problem is because 1770 products in the catalog and the catalog is generated in a high-quality format. We are working to solve this problem as soon as possible. You can expect it to be solved tomorrow morning.