THe drop in price had nothing to do with 60% - the 60% was long GONE by the time the price dropped, as the company had reported $800k in profits. Know of what you speak.
Yes, they have several typos - very careless of them. It's a red flag, as is the 60%. I didn't invest with any seriousness when they still had the 60% in effect. Sometimes 'scam' is just too convenient a label. Very legit companies take on convertible debt at times too. It's risky but sometimes is the best they can do.