Advertising campaign spent

we are a new seller having a total of 19 sponsored products. It’s early morning in the UK, we think there won’t be too many people shopping on Amazon so we paused our ongoing advertising campaign about 20mins ago, and we couldn’t find one of our products at least on the first 10 pages by searching keywords. However by the time i post this topic the spent has gone up more than £10 from the time i paused the advertising. It looks not very reasonable!
has any seller come across this similar issue before?

Have the sponsers key words as automatic or manual.

High Bids = Higher In The Results - Especially on exact match keywords