Hello majou,
For uploading you can create a project copy and leave only required assets there, such as dense point cloud, for example, and tiled model. Other assets, including the aligned cameras, can be removed from the project copy prepared for the publication.
We do not recommend to upload models with more that 1M faces and high resolution texture to online viewer - instead use Tiled model.
Publication may take some time depending on the variety and size of the assets, so it is better to wait till you get the notification that the publication is completed.