Hi

I tried this one

https://www.jigidi.com/solve/7f4q1j8e/the-ultimate-end-geocoin-side-a/

I puzzled 2 pieces at a time and stacked them. When last pair of row was done I connected all the pairs into a complete row.

That was working only one time. I obtained message when puzzle was finished

I tried again 2 times with same process but no message when puzzles is completed.