PeepSo allows users to upload images and store them on your server.
The folder where images are stored must be a directory that is writable by your Web server and and is accessible via the Web. If the directory specified does not exist, PeepSo will create one.
If you chose to ignore this option, PeepSo will follow the system path where WordPress is installed.
Access this setting through WP Admin -> PeepSo -> Configuration -> Advanced. Scroll down till you reach the File System Override panel
In case you change this setting and enter the other directory in the “Uploads Directory” box, this must be a directory that is writable. If it’s not, the “PeepSo can not write to directory” error is generated in WP-Admin > Tools > Site Health.