Hi ,
Keep persevering, it gets easier the more you fiddle and experiment.
You would have to replace the Sinewave and Pickup Objects shown in the above diagrams with your own Actors. You mentioned you already you have done this but they didn’t link. Did you reference them correctly? Can you post a screenshot of your network.
I don’t know what you have called them so I just placed two empty objects as an example. To reference your own actors all you need to do is select them in your world view and with it selected in your level right click anywhere in the blueprint then select Create a reference to <Your Object Name>. (its right near the top) This will create a correct reference to your object.
A correct reference will probably look similar to this, but yours will be named differently.

From here you can hook them up to the above network and remove the two example objects. One thing to keep in mind after this is that your pickup object isn’t static and is movable, but I assume as you are already seeing them move into the sky that they are already.
Cheers