I can only imagine the 5* reviews are paid for.
There is zero chemistry between the lead characters, the script obviously has no consultants as it’s doesn’t recognize any basic skills or spycraft understanding.
There is no foundation as to why these people were chosen, who they work for and why they would work for what appears to be an illegal organization without question. It’s too far fetched even for sci-fi.
The production quality itself is good which is why I gave them a star for that but those responsible for script development and casting need to rethink things.