Hi @mbevara,
Welcome to the Community!
I’m not sure but it might be that your syntax is wrong. Here you have documentation for this:
There is an example shown for something similar:
Filter parameters can be combined using logical operators “and”, “or” and/or “not” and can be grouped with parentheses “( )”, such as the following request: https://cloud.uipath.com/odata/Jobs?$top=10&$filter=Robot/MachineName eq 'LAVINIA-PC' and (not(Source eq 'Manual') or StartTime gt 2017-10-28T12:13:00.07Z) - displays the top 10 jobs that are being executred manually or after “2017-10-28T12:13:00.07Z”, by a Robot deployed on the “LAVINIA-PC” machine.