Text & design after form submission

Hi,

to change the texts you can use a plugin like Say What? or Loco Translate to do an English-to-English translation.

If you also want to change the styling for this page then you would need to customize the wpadverts/blocks/publish/templates/publish-save.php template file, but note the changes you will make there will be overwritten on WPAdverts update – right now it is not really recommended to customize the block templates.