The bumps in traffic and sales come as retailers try to make the mobile shopping experience easier by improving their mobile apps and adding coupons and other deals. Shoppers also have gotten more comfortable browsing retailers' web sites as smartphone screen sizes have gotten bigger, making it easier for them to see photos of the items they want to buy. Digital wallets and apps that let shoppers store payment information are helping too.

다 해석이 안되는건 아닌데 자연스럽게 안되는 부분이 있어서 전체 문장을 올려봅니다.

이 문장에서 the bumps를 어떻게 해석해야 자연스러울까요? 트래픽과 판매업에서 부딪히다?? ㅠㅠ

"It's very convenient," said Seth Reineke, 25, an insurance worker from Iowa City, Iowa, who plans to peruse Amazon's weekend deals from his phone. "It allows me to keep track of time-sensitive sales without being tied to a computer or having to leave a holiday event or get-together."

요거는 It allows me to keep track of time-sensitive sales without being tied to a computer or having to leave a holiday event or get-together." 여기서 좀 막히네요 ㅠㅠ

영어 고수분들 한번만 도와주시면 감사하겠습니다. (__)