What are the problems may be faced in online marketing?

Number1 the most important problem is to find the right person for required position. And the some other are the source you are trying to do business with.

The biggest problem is lack of trustworthy enviornment from both sides i.e. seller and purchaser.

1. Inability to reach to the right cutomer 
2. Sample size is not known
3. Message has to be clear and crip
4. The way you present your content matters a lot

Some of customer fails to pay the bill.some of not able to gave the exact location.

1. the right customer
2. the way you present your products
3. sample size is unknown
4. description must be clear and crisp

Bots, they fill up many things online which cause you to question the numbers provided  by the networks you work with. Fake accounts are also leading in this, where you always face irrelevant numbers on accounts and the place of origin.

live tests