If you own a valid license for Lumion 10, the update to version 10.5 is free and can be accessed through your Lumion Account System Requirements
: Since you are on 10.5, you can use the rain/snow effects to create a "moody" atmosphere with puddles that reflect your lights. Lumion Pro 10.5.1 Portable - -CrackzSoft-
For a secure and reliable experience, it is strongly recommended to avoid "portable" cracks and use official distribution channels. If you own a valid license for Lumion
If you are a student or a teacher, you can often access Lumion for free or at a massive discount through their educational program. Lumion Pro 10.5.1 Portable - -CrackzSoft-