First of all, there is no risk of US hyperinflation. Second, the pound has not been doing too well lately (though it has recovered somewhat from its low in September), and the UK's long term prospects have been hurt by Brexit. The dollar is basically as safe a currency as you can find.

Since Ecuador uses dollars, it makes most sense for you to stay in dollars. Exchange fees eat big chunks of money when you move from one currency to another.

Crypto is just gambling. Go to a casino instead.