Unfortunately that flow is full of contributed nodes that generally we will not have installed. Please select just the few nodes that are needed for the logic you are asking about and paste it here using the method described in this canned response:
In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote ```
)
```
code goes here
```
See this post for more details - How to share code or flow json