This is Todd from Optimizely Support. There are a few reasons why the Preview tool may not be working on your site. First, it is important to make sure that the Optimizely snippet is on the page. Typically we recommend placing the snippet as high in the <head> tag as possible. Secondly, the Preview tool works by adding a token to your URL. Some sites will block 3rd party sites from adding query parameters to the URL preventing you from entering Preview mode. Thirdly, if you have multiple projects in your account, each project has its own unique snippet. If the Optimizely snippet is on your site, verify that you have the correct snippet for the project and experiment you are trying to preview.
If you continue to have issues, I would recommend filing a support ticket so we can take a deeper dive into why you may be experiencing issues.
Thanks for your feedback.
I asked my IT team to implement the Optimizely snippet on our 3 sites. And on,
- http://www.record.pt/ - preview mode works
- http://www.jornaldenegocios.pt/ - preview doesn't work
- http://www.cmjornal.pt/ - preview doesn't work
Could you please check for me if ths snippet is in the right place?
About this statement: "Thirdly, if you have multiple projects in your account, each project has its own unique snippet. If the Optimizely snippet is on your site, verify that you have the correct snippet for the project and experiment you are trying to preview."
It means that I have to akt my IT department to change the snippet every time I have a new project for the site?
Thanks in advance
Since you are able to utilize the Preview tool on one of your domains, it leads me to believe that the other two domains have the incorrect snippet. Each project you create has it own unique snippet and it can be found under the Settings tab for that project. It does appear that your IT department will have to change the snippet on the the two domains where the Preview Tool is not working, making sure that they use the correct snippet from the corresponding project.
Most users will create a project for each domain that they are testing on to help reduce snippet size. If you plan to test on new domains and create a project for each domain, then yes your IT team will have to implement that snippet on each page you are testing.
If you continue to have issues, I encourage you to file a support ticket.