Getting through the Tips and Tricks section is a challenge at times but the search function reveals a bunch of good tips.
https://community.glowforge.com/search?q=illustrator%20text%20category%3A16
Perhaps you need to understand the file saving process a bit since it can be troublesome. There have been some debates about the difference between export and save as SVG. Try not to get too bogged down in issues that might be most relevant to a small subset of designs. (Hence @chris1’s practice of saving as a raster avoid some sizing problems.)