I never had issues like that, I'm playing for more than a year with roundabout 80 hours now.

There are two ways to download assets: In the workshop and via the game itself. Did you try them both?

I recommend asking in the official discord directly, there are always people who can help you..

引用自 Papa Django：

I need to restart the application many times to be able to appear connected when I open a map (most of the time my own maps) and can't download assets, which makes a pretty empty map.

Any tip? A parameter I need to set in or is it wide spread?

Quick question: are you opening Dungeon Alchemist from within Steam or from a shortcut on your desktop?