Screenshots can be very helpful.....as there are multiple boom gates in multiple game scenes in this Event.
There shouldn't be any items stuck behind the boom gates from memory 🤔
Have you checked out the relevant Wiki pages, quests, maps, videos, guides, walkthroughs & hidden gifts.
In certain scenarios it is much more easier to consult, study & follow the maps instead of the videos.
You can easily find the solutions to puzzles if you check out the maps.....everything is clearly & concisely highlighted....including hidden gifts.
The Wiki pages & this forum will become your best friends throughout your Diggys Adventure journey.
Video - PC
Video - mobile
Fan Based Websites