Я проверю кампанию у рекламодателя,

Я проверю кампанию у рекламодателя, как что то выясню сразу сообщу Вам.

Результаты (английский) 1:

I'll check the campaign an advertiser like that then I will find out immediately will inform you.

Результаты (английский) 2:

I'll check the campaign an advertiser as it became clear that soon I will inform you.

Результаты (английский) 3:

I've the advertiser's campaign, as that'd check as soon as I will inform you.