Hello
No changes have been made to the carousel. Most likely this would be down to possible performance issues on your device. Testing on a number of devices here, your carousel appears to be working fine.
To edit just the text on your homepage carousel try adding the following to the Custom CSS field of your templates parameters (edit to taste)...
#owl-carousel407 p {
color: #999999;
font-size: 20px;
}
Ciarán