Hi @karolsnewday,
I hope you are well today and thank you for your question.
I’ve been given the task to update your sparkling theme version 1.6.1. When I activated the new version 2.3.2, all previous slider, styling and color options are gone as if starting from scratch.
If you have made changes in the theme files then it will be gone so please reconfigure the theme.
Also in the latest version of theme all theme options are now moved to WordPress customizer that you can find in the admin area under Appearance >> Customize. All settings are still there but now you can tweak everything on a live preview. This change is made due to wordpress.org recommendation.
I also noticed that in the file manager in wp-content> themes, the version 1.6.1 has a name of Sparkling master and the version 2.3.2 just says sparkling.
Yes this is because you have downloaded the old version from GitHub - ColorlibHQ/Sparkling: WordPress Bootstrap 3 theme with dozens of options powered by WordPress Customizer instead of Sparkling – WordPress theme | WordPress.org
FYI: Letting you know this also, in case related some how… my other issue with version 2.3.2 that I’m posting in separate forum (live preview gives error, customizer gives error, and there is no longer a theme option, it’s gone)
Let’s resolve that issue on your following separate topic.
https://colorlibsupport.com/t/activation-of-sparkling-theme-version-2-3-2-has-error-no-customizer/
Best Regards,
Movin