Hi there, @Anird_A 
Thank you so much for your kind words 
Yep, you can upgrade your plan, change the widget background or any other settings, the widget will remain unsynced.
By the way, we’d like to invite you to participate in our August Contest (related to music), where you can win a 6-month extension for your subscription - August Contest: Celebrate 100K Users with us and win 6 FREE Months! 
Check the details and join in 