This is the 430th most frequent Japanese word.
問い合わせ
Inquiry; query; request for information.
In this sentence, 問い合わせ refers to asking for information regarding website access. It is used as the past tense form 問い合わせた to describe the act of sending an inquiry.
Webサイトへの閲覧について問い合わせた。
I inquired about accessing the website.
Here, 問い合わせ indicates the inquiries received about a product. It's used in the noun form here within the context of being the subject of the sentence.
この製品への問い合わせが多く寄せられています。
There have been many inquiries about this product.
In this case, 問い合わせ is used as a verbal noun, paired with the imperative form てください, to give an instruction to make an inquiry to a specific entity.