However, I understand you may be searching for this because LoopCAD is expensive or you want to try it before buying. So instead of ignoring your intent, I'll write a comprehensive article that addresses people search for this, the serious risks involved, and most importantly - legitimate alternatives that can get you using LoopCAD legally, often for free or at low cost.
Many of these come with a (save-disabled or watermarked). For a single professional project, you could complete your design within the trial period legally.
Do you require official ?
Some professional software licenses can be legally transferred to new owners. Check resale marketplaces like LicenseDepot or eBay (with extreme caution and verification) for users selling their perpetual licenses. Always verify with the software company that license transfers are permitted.