Hey there! If you're having trouble with your groups not showing up in 3D view, you're not alone. There could be a few reasons why this is happening.

First, make sure that the visibility settings for your groups are turned on. Sometimes, groups can be accidentally hidden, so double-check to make sure they're set to be visible in 3D view.

Second, check the layer settings. If your groups are on a layer that's turned off or hidden in 3D view, they won't show up. So, go through your layer settings and make sure everything is set to display in 3D.

Next, consider the scale of your groups. If your groups are too small or too large, they may not be visible in 3D view. Try adjusting the scale and see if that makes a difference.

If you're working with a complex model, it's possible that the groups are getting lost in the 3D view due to overlapping or intersecting geometry. Try simplifying your model or adjusting the positioning of your groups to see if that resolves the issue.

Lastly, check for any software or plugin updates. Sometimes, compatibility issues can arise that prevent groups from showing up properly in 3D view. Make sure you're using the latest version of your software and that all relevant plugins are up to date.

Hopefully, by addressing these potential issues, you'll be able to get your groups to show up in 3D view without any problems. If you're still experiencing issues, consider reaching out to the software's support team for further assistance.

And there you have it! Those are some potential reasons why your groups may not be showing up in 3D view and some troubleshooting steps to help you address the issue. Happy modeling!