Assets exceeding a certain size will not support the "Publicly accessible" sharing option. Consequently, the sole sharing method available for such assets is through private sharing via user email login (Business only). We are actively developing new technology to enable unlimited sharing, but, in the interim, it is advisable to ensure your assets stay below 600 million triangles. For even swifter loading times, consider keeping assets below 100 million triangles.
There are no restrictions on the number of textures or photos you can upload; you are free to upload as many as you desire.
Feel welcome to register an account on this help center and select the "Follow" option. This will ensure you receive an email notification when we introduce support for unrestricted sharing.