Witch files should I delete, manually from my file manager, to release the space in my blog, without losing the articles. Please explain step by step. Thank you!
It actually depends... If your files are bound with your articles, there is no way you can delete them, as you will loose the articles. Delete only those files you have uploaded to your website through FTP and you no longer need them. If you have no such files, I think your only choice would be to buy a paid plan to increase space: