Mikhail Luzyanin

Can you share the example file with texture?

I’ve tested it on the same max version, but all is fine. Try to update to last engine version and test it.

It works fine ofr me. What 3ds max and verge3D version do you use?

If you use keyframes animation with shapekeys you can’t set shapekeys wih puzzles while animation is playing it will always reset it to keyframes. the only way is to use Animate param puzzle.

This is some kind of limitation: you need to set a keys for all shapekeys to see them animated correctly. I mean: if you have (for example) three shapekeys and only first animated you need to animate first shapekeys as you want and other set keys by zero value at first frame. This mean that you can’t keep you object animated and changing shapekeys by puzzles simultaneously. To achieve what you want you can use Animate Param puzzles instead of animation. So if you plan only to animated your shapekeys just set keys for all shapekeys, otherwise use puzzles to manipulate shapekeys.

Sneak Peak and Export to GLTF will work the same except puzzles logic. I mean there’s no difference on export to GLTF only puzzles logic will be added when you export to GLTF. All other things like animation, materials, shapekeys and all what supported will work the same way.
If you use Child of constraint on bone try to set Bake Armature Animation in Verge3d section of render settings tab. If it not helped try to bake your animation manually using Blender animation baking tool. If you use Child of on object his will not work and you will need also bake your animation to keyframes using blender animation baking tool and remove Child of constraint before export to see the same result.