Hey i have the same problem !!
i have added plenty poems to my favs but i have only 5. and when i remove one, the older one comes back to the end of the list ( it's still 5. ) it's like it cant show em all or something. 20 is ok but 5??!!
I think u can add as many as u want but it only shows i think 5 but i dont know but when u delete them it shows up ur older poems that have been added 2 u favs