Beat the level Ever and it says 100% on the Delgate as well as 0 creeper bottom left. I took 2 hours to beat the level and would rather not replay it. Can you please make the Delgate do 99.8% of the level instead of 100% this would fix the Delgate from not launching as it properly should.
No need to replay - just load your last (probably auto) save and make some space for the trees. Trees can't grow below cannons or mortars (or any other unit)
Greetings from The Shire!