Yes, I am using the free version, and I had to place my HUD (hitpoints and ammo counter) on a parallax layer, which left me no choice but to place everything else on the same layer. I appreciate your offer to help.
As I previously mentioned, when I collect the seed on the left side of the screen, the bullets fire normally, however, as I progress to the right side of the stage, the origin point of the bullet lengthens further and further along the (X axis) away from the player sprite. When you collect the first seed, fire it, and you will see it firing from the origin point. walk to the right (to the edge of the cliff) and fire some more, and you will notice the origin of the bullet has moved. I only have a single "Scroll-to" behavior set on the player sprite for the camera - no additional conditions.
I have attached a link to the C3 file, and disabled the limited ammo count on the event sheet, that way you can simply collect the "seed" and fire it to see my problem.
WASD - moves/jump
SPACE - fire seed (after collecting one at beginning)
https://we.tl/t-PYVug00lhI