Howdy @joakimn73
We have just now released an update in version 1.3.3 to change the default settings of Snow Effect.
I would request you to please update the plugin to the latest version 1.3.3 to use the requested feature.
We have introduced a new filter using which you can update the z-index of the snow effect. For more information, please check this doc – https://premanshupandey.com/particle-wordpress-backgrounds/plain-snow-fall-wordpress-plugin-settings/
I hope this will help you resolve this issue.
Thank you.
Marking this as resolved for now due to lack of activity. Please feel free to start a new topic if you are still facing the issues.