Not Able to show more than two adsense add on sidebar

Try placing three ads in three separate sidebar widgets.

You can also try a plugin such as https://www.ads-software.com/extend/plugins/adsense-plugin/

have you contacted google about the problem?

can you post a link to illustrate the problem?
how many other adsense units do you have on the page?

I had not contacted yet to google.

Please find the url : https://foreignlanguageclassesmumbai.bindas-bol.com/article/beginners-spanish

on above link it shows only one add. Where as on https://foreignlanguageclassesmumbai.bindas-bol.com/ it shows three adds.

Thanks to all for helping me

The first link shows three Google ads (the maximum ad units allowed) and three empty Google ad boxes on the side bar. It’s perfectly OK. Please visit your AdSense account and re-confirm the number of ad units and ad links allowed on a page.