The Sun on Sunday newspaper is yet to convince advertisers, according to The Drum:
"The Sun on Sunday is failing to shine as brightly on advertisers as its News of the World predecessor, with Nielsen indicating that its ad spend is down almost 25% or £10m compared to the scrapped title."
The stats become more damning for the paper as the story continues.

Measured over the 10 weeks to May 6:

"the Sun on Sunday took £4.6m in ad revenue, compared to the nearly £8m the News off the World made over the same period last year – a near 40% decline.

 "Analysts project that the Sunday edition of the Sun is within a whisker of falling under the psychologically significant 2m circulation level, noting that it recently came within just 70,000 copies of that figure on Easter Sunday." 
You don't need to be an industry analyst to forumlate an idea as why advertising revenue is down. Despite leaders pointing to the overall decline of newspaper circulation, the News of the World's reputation was so tarnished in the wake of its phone-hacking scandal that it was closed permanently. The Murdochs' NewsCorp group, owners of News International commisioned a Sunday edition of the Sun, the country's top circulator in a bid to fill the void and win back public confidence - but with the Leveson Inquiry still ongoing, News International are apparently not out of the woods yet.

Though officially, they remain unbowed, despite week on week sales declines of as many as 166,000 copies.

Paul Hayes, managing director at News International's commercial operation, said: “Ten weeks in and the Sun on Sunday is continuing its success story with both readers and advertisers backing the Sunday edition. In some instances we are seeing advertisers increasing their year-on-year spend within Fabulous magazine."