I cant Found Theme customization option

Dear Team,

In the previos version i have change my invoice them but now i want to change and add some additional thins in my invoce but i cant fond them coding edit option.

If someone have any idea please help me to find it. if there is no option please add option again to customize my invoice theme otherwise my subsciption will be useless for me this year.

This is your first forum post so wonder when you actually started using Manager and setup a theme because it is already several years in obsolete features under settings. Given that you mention that you use a subscription I guess this will be to Cloud edition, which updates itself automatically whenever a new version is ready, sometimes more than once a day.

Obsolete means that the feature it is no longer supported but still available. The issues with the theme relate to non-English language usage, especially right-to-left languages that do not render properly. It also uses Liquid for theming and that is no longer supported either.

Look here

Settings - Obsolete Features - Themes