You're able to access the end via MyM portal. For more info on our portal, take a look at the post here. Let us know if this helps. -V
If you mean the portals the End dragon spawns upon her death, you can still fly around the end to look for islands.
Sometimes she just doesn't spawn them, I know this was reported before to Mojang (as it happens in vanilla too) not sure they ever cared enough to say anything other than "working as intended"
