I need logs from Xcode when crash happens. (You can just delete haxe in Xcode to get it to work see also https://github.com/byrobingames/tapdaq/wiki/iOS:-Publish-ipa-with-Xcode
And again don't put blocks right after initialize block, wait a couple of seconde to call load the ad.
Did you put your AppLovin SDKkey inside the include.xml file?
Did you also try to clean project after download.