Wont Stay put

Im a deputy and have had these straps on now for 2hr and 45 min. 15 min ago I was sitting here at the computer and one of them popped off my shirt. I then went to secure same and the other side rear popped off. Then it was like a game of back and forth . The clips got too soft or something and neither side would stay put. As soon as I got one secure and moved to the other that one would pop right back off. Verry anoying seeing as it is the begining of my day and I will have to be hasseled with my shirt coming untucked all day... SMH. Should of sticked to what I know.