CMS pages don´t save any changes | PS 1.7.5.2

[SakiBijou]

Hi,

we run an PS 1.7.5.2 with a 3rd party theme ( warehouse ) and have the problem that we can´t change our existing cms content.
Every time we make changes, PS give us an green pop up and say everything is fine, but the changes are not saved.

- We moved the store to an newer PS version a couple of years before. Our old admin told us, since then there are this issue.

- We can create new cms pages in the BO and they appear in the Database. But we are not able to put content, even in the new CMS sites.

- We checked if the ps_cms has the indexation line. ( See attached screenshot)

 

We searched the forum for this issue, but unfortunately we didn´t found any solution.

Thank you in advance for your help!