Hi paeddi,
I can not access your site, the account does not work.
About your issues, I think you can try the following solutions, If these solutions do not help you resolve issues, you can check the account and we will help you resolve it.
1/ I have tried to add the Alternate text for pictures here and see that the module work fine.
2/ I think you can add this CSS code to your Custom CSS to resolve the issue:
.blog .item img, .blog-featured .item img {
height: auto;
}