no html editor

I think you mean “text” not “test” — and it’s just been renamed. It should work the same as it always did — is that not the case?

I have tried adding html (the amazon iframe code) and it does nothing – i have also tried a shortcode html plugin and it also doesnt work

Sounds like you need to go through the 3.5+ upgrade problems thread:

https://www.ads-software.com/support/topic/troubleshooting-wordpress-35-master-list?replies=4