Add this code to the Custom CSS field on the Style tab of your Instagram Feed widget’s settings:
.eapps-instagram-feed-content {
display: flex;
flex-direction: column-reverse;
}
Let us know if the solution worked for you 
Add this code to the Custom CSS field on the Style tab of your Instagram Feed widget’s settings:
.eapps-instagram-feed-content {
display: flex;
flex-direction: column-reverse;
}
Let us know if the solution worked for you