Problems when exporting specific pages to PDF

Hi All, hope you can help

We have recently signed up to Creative Cloud and are now working on a large graphic project with a new catalog. When we try and export the indesign file to pdf we run into two problems. First problem is that we are not able to choose certain pages, where we normally write the pages wanted we get this value already set 'A4 L' and we cannot change this value to the pages we want.

Another problem is the following warning:

'The preset specifies source profiles that do not match the current color settings file. The profiles defined by the color settings file are used instead.'

any idea how we can solve the above, thank you so much in advance