You may ask why you can’t comment on the blog entries of Relayfor-Ukraine.com? You can, but it is not obvious that you can. Send your text and pictures via email to press (at) relayfor-ukraine.com. Pictures shall be set on public domain and please jpg format only. We don’t need high-res quality in a blog.
There is also a page where you can post as you might have expected. Please go to https://relayforukraine.wordpress.com/ – and there to Comment Approval.