Way to use StartApp Ads

My adsense account was suspended 2 years ago because of low traffic.
Now, I have created a new app with decent traffic (1K+ downloads, 500+ active traffic)
I wanted to use StartApp ads in the application.
But one limitation in that I am not able to sign up for Google ads manager. But its compulsory to use Google Ads manager for kodular to show the ads.

Even when I click on ‘Sign up for a Google Ad Manager account’ nothing happens.

Any help will be appreciated.

Click it several times to do so.
First it redirects but after sometime it direct to google ad manager