Hi and welcome to the community @NiNi!
When I first got my iEngrave and powered it on, it always gave me 3 beeps. That went on for months, and it turns out that’s completely normal for the cover edition. HTVRONT/LOKLiK never mentioned this anywhere, so I shared it with the community based on my own hands‑on experience.
After updating to the latest firmware, my machine now gives only 1 beep when turning on (which I stated earlier on this thread). If you want to check whether you’re on the current firmware version, just go to Device Settings and tap it—like in the screenshot below.
On the other hand, if you’re using LightBurn, make sure your unit settings match the ones in the LOKLiK IS app. For example, your speed should be set to mm/min so everything lines up correctly.
NOTE: You only need to enter the same parameters shown in the Material Settings section under Material Management.
More details here: LOKLiK iEngrave™, LOKLiK iEngrave Help Hub, 🌟 Beginner’s Guide: 10 Things to Know When Starting with the LOKLiK iEngrave