You can Re-post your ad by deactivating it and activating it again. However, it will only be bumped up to the top of the page if you do that after 30 days of posting it.
Also please don’t deactivate your ad and do the same ad once more as it’s considered a duplicate and it will be automatically rejected.
Also we advise you to never delete your ads permanently and do the same ad once more as this also considered a duplicate and will be rejected automatically by the system, so make sure you only delete permanently the ads you have already sold and will never post about them again.