Can you confirm that the IF1 node is returning true? You can open the IF1 node and see what data it displays. If it doesn’t display any data (by default, it will show output for the true condition), it means that the IF1 node returns false.
If possible, can you share the workflow? You can select all the nodes and copy them (CMD + C) and paste it here. Here’s video for reference: How can I contribute? | Docs