You may have experienced some issues with your diagram images not rendering. This should be rectified now. The images are now coming directly from the
PlantUML servers instead of going through the PlantText proxy. This should fix this problem and also increase performance. You may want to change any image links
from https://www.planttext.com/plantuml/ to https://www.plantuml.com/plantuml.
On a related note, I also fixed an issue with an item in the settings window. The "PlantUML Server" setting was not persisting when you hit the save button. It
should be working now. Please feel free to use this setting to point PlantText to any custom PlantUML server you wish to use.