Firstly, the Lightning Network has good use cases for b2b, but it should have never been used as a global payment network for retails. Small blockers didn't have any other good scaling alternatives in 2017, so they went all-in with the LN.

Secondly, you've made a serious mistake by trusting an experimental software with all your bitcoins. It's very unfortunate that the developer didn't even reply to your post, but we can't expect him to refund you since LNbank is an open source software under the MIT license and it's very hard to verify that a victim and an exploiter are different individuals.

Thirdly, the adoption in El Salvador is still pretty low and the Bitcoin Citadel is more vulnerable than guerrilla-style surviving strategies like a parallel economy.