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open ~/Library/Preferences/Snap/Lens\ Studio/ %LOCALAPPDATA%\Snap\Lens Studio Copy Text
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Thanks for submitting this issue.
Unfortunately, it's likely due to the operating system or hardware you're using – since they don't meet the system requirements for Lens Studio.
Still, we hear you loud and clear, and are logging the issue in case there's ever a workaround we can provide!
Minimum Requirements
Operating System: Windows 10 (64 bit); MacOS 10.11+
Hardware: Minimum of Intel Core i3 2.5Ghz or AMD Phenom II 2.6Ghz with 4 GB RAM; Intel HD Graphics 4000 / Nvidia GeForce 710 / AMD Radeon HD 6450 or better; screen resolution of 1280x768 or higher
We'll try to resolve this issue as soon as possible. Thanks for letting us know about it!
Keep an eye out for a followup email from us. We may have a couple more questions for you, or we might already have a solution to offer.
Happy creating!

I believe those permanent lenses are from Team Snapchat. The lenses you create are permanently active but users have to rescan it every 24hours.. i think? im still very new to this.
Antonio has it right :)
We're weary of flooding users with too many Lenses in the carousel. So although there is a 24 hour limit, there is no limit to the number of times the Lens can be unlocked by a user. Anyone can re-scan everyday if they would like to do so.
Is there any plan to select specific lenses that you want permanently? Rather than needing to re-scan even lenses you want to use a lot every day?
you can go to settings>snapcodes>snaphistory if you don't feel like rescanning it every day. You will still have to do this daily, unfortunately. Also, if you don't update your lens for a year, it will be deleted.
I found and love this one lens/filter.When I am in Snapchat, under settings, I do not even see a snapcodes option group or the subgroup snaphistory. I cannot seem to find it anywhere. I use it to make funny videos for my kids and grandchildren. Suddenly, I look it up by name, and it no longer seems to exist. I wanted to make it a permanent lens option, and I cannot. Is there anything that I can do to recover it as a choice?