Help with new colorfuze blue diamond orchid

[Stephn3htx]

So I am totally new to orchid care! I was given a blue diamond colorfuze orchid as a gift in the beginning of May. It had 4 bright blue blooms and was beginning 2 new blooms. The two new ones bloomed within 2 weeks but were white. After that the blooms lasted about 3 weeks then they all drooped and fell off, with the last one (the newest) falling off today. I followed the watering instruction for watering every 7-10 days/ only when dry. And it has been kept in a spot with temps between 70-75 degrees. The roots are not soggy but appear slightly moist, with the top roots dry. Did I do something wrong because the new blooms lasted so short? What should I do now? I wasn't sure if cutting the stem back still applied if the blooms fell prematurely.