Your internet details do not match the advertiser's targeting settings.
For example, if you visit your website from Spain, and the advertiser has set up targeting for GEO - Italy, you won't be able to see ads because you do not match the targeting settings.

Frequency cappings have been exceeded.
For example, advertisers whose ads are placed on your website have set up frequency cappings as one display per user within 24 hours. In such a case, you will see ads only once, and the next ads will be shown after 24 hours.

You have incorrectly placed an ad code.
Such cases are common, so please double-check if you have correctly added an ad code to your website.
​How to add a Pop zone on a website?
​How to add an In-Page zone on a website?
​How to add a Video zone on a website?
​How to add a MultiTag Banner zone on a website?
​How to add a MultiTag Inpage zone on a website?

You have mixed up ad zones incorrectly.
Please be careful and do not place too many ads on your website. If you want to increase your income, use the following combinations:
* 1 Pop ad zone + 1 In-Page ad zone
* 1 Pop ad zone + 1 Video ad zone
* 1 Direct Link + 1 In-Page ad zone
* 1 Direct Link + 1 Video ad zone
* 1 Multitag Banner + 1 In-Page ad zone
* 1 Multitag Banner + 1 Video ad zone
* 1 Multitag Inpage + 1 Video ad zone
​
If you place too many ads on your website, your income may drop, and your audience may become confused.