JSON Formatting

I created a JSON that counts the days after a certain start date "A" and stops after a date "B" if there is no date in B it keeps counting. Further the days count<90 turn green, 90-120, turn yellow, >120 turn red. The problem I encounter is that it works fine in 0. All items, but no longer in a specific view, although the record gives the correct number (B-A) the visual view keeps counting from A.

Did anyone had something similar?

The JSON code checked out correct and it was mentioned that the error is to be found in SharePoint backend configuration settings, rather than frontend browser code or indexing times.

What could/should be changed in the backend configuration to solve this?