The problem with the data upload limit for attachments has been fixed. I have restored it to 30MegaBytes. A recent forum software upgrade was responsible for the changed limit. Please accept my apologies for missing this when upgrading the forum sofware, Mabula.
[Sticky] How to access data on your MacOS iCloud Drive with Astro Pixel Processor
The File Chooser panel in Astro Pixel Processor does not easily show you, how to access the data on your iCloud Drive by providing a iCloud icon (yet).
You can however still access the data, which is stored in your iCloud Drive, because the iCloud Drive is mapped to a folder in your user directory to which you can simply navigate within the File Chooser panel:
iCloud Drive :
/Users/[your username]/Library/Mobile Documents/com~apple~CloudDocs
Please let us know if you have any additional questions regarding iCloud access.
Main developer of Astro Pixel Processor and owner of Aries Productions