I have now tried to access the Electroneum app several times during the last couple of days, and every time it says that their servers are overloaded and I should try later.

I don't understand why they are using an online wallet where the private key is stored on an ETN server instead of being stored locally. First of all it is stupid because it makes it like a bank/exchange and goes against the whole point of cryptocurrencies. But right now the biggest problem seems to be that their servers are overloaded so we can't use their wallet anyway. This is an obstacle they have to solve if the main aim for ETN is mass adoption by a very large user base.