We reviewed the availability of custom levels in the mobile version and found that it is not possible for the following reasons.
Store policies prohibit the use of content that has not been created by or licensed to developers.
We want everyone to use the level editor in good faith, but some bad actors may abuse this feature with offensive content.
To combat harmful UGC, the store requires developers to review UGC. However, due to practical limitations, devs cannot moderate all UGC.
For more detailed store policies, you can visit the following websites.