Embroidery machine leaving gaps in full pattern

I got my machine today and have started doing a few tests. The problem I keep having with every design is that the stitches won’t align. I saw someone had posted a similar problem, but their problem was not having overlaps in their design. I’m just sewing circles, one complete circle, and the centers won’t line up. It starts from the top and does one half, then it moves to the bottom and works it’s way back up, but it doesn’t complete the final stitch in the center. Every single test I’ve done is the same. I’ve tried other shapes as well with the same results.

This is happening with every sticht I try: satin, zigzag, tatami

Some info: I’m using a Brother SE400. I’m creating the shapes in SophieSew. Thread is embroidex 507 (dark green). The fabric is a flannel. The bobbin thread is the standard free white included with the machine, as is the needle (75/11). The bottom stabilizer is New Brothread cutaway white 2.5 oz 12”x10” 100 precut pieces. The top is World Weidner Tear & Wash Away - Machine Embroidery Stabilizer Backing 100 Precut Sheets- Medium Weight 2.0oz.

The flannel is just a scrap piece I’m using to decide on the type of sticht I’ll use. The fabric I will eventually use is plush velvet (hence why I’m testing the top stabilizer).