Garden wall roughcast cracking

[mrpchrstph]

Hi guys, first time poster. Im a bit stuck. I have an external garden wall thats been roughcast about 2/3 years ago. Ive noticed its now cracking at certain parts of it. This happened before and i was assured that the new roughcasting wouldnt crack or break. Its happened in the same places. Unsure why or how this has happened. As you can imagine, google is a bit of a minefield. Its everything from frost to polio. So figured i would ask you guys if you have any hints as to whats caused this? Happy to post pics if required

 

[freddiemercurystwin]

Yes a few pics will help.

 

[mrpchrstph]

Pics attached. Only been done about 2 years and it’s blown at the corner again and it’s cracking at the end. No idea what’s going on and can’t keep throwing money at it