Which comes first?

I have purchased peel and stick backsplash ( 2 of ROSEROSA Peel & Stick Metallic Color Backsplash Hair Line Wall Paper & Border Sticker Self-Adhesive Wallpaper Shelf Liner Table and Door Reform (MG5010-5 : 2.00 Feet X 6.56 Feet), and paint for my countertops. Which should I do first? If it's OK to put the contact paper on first, will Frogtape pull off the backsplash product once it's affixed? Please respond asap! Anxious to get started!!! I have contacted the seller, but am not getting correct answers (Korean). Thanks!!!

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