Problem & Questions with conditional Formatting

Hi,
Please see attached screenshot and export. We have embedded FlexMonster into our application and providing it with data using CSV.
When I add conditional formatting to a column, it works some but not others. I tried to attach a video to this ticket but was not permitted to do so. Instead, I've added screenshots. I can successfully get the conditional formatting to work for one column but not another. You will see in the screenshots for "Patient PulseScore" any value equal to 3 should be highlighted red. However, other values are instead highlighted red.
The CSV Export attached is from FlexMonster (not the CSV we're providing to it).
Please could you answer the following:

1. Advise if I have done something wrong to cause what is described above or it's a bug? Or whether we need to format the data in such a way when providing it to FlexMonster so that it will work.
2. Is there a hierarchy to the Conditional Formatting, if there are lots of rules I want to add, which rules take precedence? Those entered first or last?
3. Is there a way through the FM GUI to conditionally format a text field? I.e. Highlight if equal to "Oxygen". I seem to only be able to enter a numeric value.
4. Is there a limit on the number of conditional formats I can set?

Thank you,
Chris