I often run into the issue that I edit my texts (adding new stuff) and then get an error message saying “failed to submit post, please try again”.
I figured out that this happens when I reach a certain number of urls and/or images in my post.
A workaround is to split my post into two, but then all links to paragraphs in the text are broken. I can fix the links in the text itself, but shared links somewhere else on the web will stay broken.
I already asked the people running my blog if they can change the settings, but they haven’t replied yet. Maybe if I tell them where exactly those limits can be changed they will respond to my question.