There is no limit to the number of posts you can make on your Memories Timeline (but storage is depending on the plan you're in).
Currently, each Memory would be limited to a maximum of ten (10) photos (regardless of the storage plan. So if you're intending to add more than ten (10) photos, you have to create another Memory in excess of ten. We have this limitation for a couple of good reasons. But our end-users should not worry, we are in continuous research and development so probably we can increase the limit in the very near future.
If at any point you need to clarify something or still have other questions, or need help in other areas of our platform, please use this link to [contact us] immediately or you may [Submit a request].