Gui looking different in play test mode

no idea if this is in the right category so please correct me if im not.

Basically what the title says, I have a gui that looks somewhat decent in development mode ( i guess you could call it) but it looks screwed up in play test mode. It is a health bar, if that helps.

How it should look:

How it looks in playtest mode:

How it looks in explorer

( Don’t mind the other stuff, im too lazy to crop it.

You can use a plugin for scaling! (Works for all devices no matter the resolution)

Link: [Plugin] AutoScale Lite for GUIs - Scale your UI

(There are other plugins out there if you dislike this one, or prefer another one)