Complex sentence: The company has been sued under allegations that it is a form of illegal gambling and that it's advertising is misleading, since it advertises the price products are auctioned at in QuiBids cash and compares them to US dollars without disclosing the different currencies being used.
Split into simpler sentences: The company has been sued under allegations that it is a form of illegal gambling and that it's advertising is misleading. It advertises the price products are auctioned at in QuiBids cash and compares them to US dollars without disclosing the different currencies being used.