Loading ebook onto iPad (Kobo ebooks app) from purchase from Kobo site (through Chapters)?

I loaded Kobo ebooks app on my iPad. Then I purhcased a book through Chapters Indigo by clicking on buying the Kobo ebook (which takes you to the Kobo site, but did allow me to use my Chapters gift card). From there, the instructions that I saw to load the book to my iPad was to sync my iPad which should ve loaded my book onto the Kobo app? Not sure because nothing happened. I m sure it s something so simple, but I m way past computer illiterate… Or patient at this point since I possibly wasted a gift card - ugh! Someone help please & thanks.

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