Work not save

[Horizon]

Don’t spam topics
We have already received many topics regarding this and it is already told to follow this

Niotron Blocks Not Save

Export the project (aia) before adding the new blocks. Download the newly added blocks as png. Then export this project. Reload the browser and check the blocks. If the blocks are missing again, export this project as well.

And also first of all search your problem/issue in community before starting a new topic