Had a developer load salient theme so I don’t know my license number or version. I want to update the theme by purchasing my own license. If I purchase and upload the updated theme will it affect the appearance of my website? Or even worse throw things out of kilter.
Read the documentation to update your salient theme
Or contact with your purchase item author @ThemeNectar hope they will helped!
The main question would be about what edits/content/changes/customisation etc has occurred
If the previous owner modified the parent code then this will not transfer with the update.
Either way you need to be run a compete backup (of everything not just the theme) before trying to do this