No more change is possible on my template (logo)

i use XTRA template. today i try to change my logo. the personnalize view show nothing. how can i solve this issue please.

Hi

Please contact Item Author to get item support How to Contact your purchased Item Author and let them know. Item author will be happy to assist you.

Thanks

the autor is not more on the plateform

please go to wp-admin then theme options => Header/logo setup or Appearance => Customize then Hader => logo setup and set your logo. Then upload your logo and don’t forget to save or published based on your theme settings options.
Otherwise you can hire a freelancer. Thanks