...
The person needs to live in the same country where ING operates.
For example, to open an account with ING.es you need to be a Spanish resident, with ING.fr only French residents are accepted, etc, etc and unfortunately they don't operate everywhere in Europe
According to the last information we have polish ING bank allows crypto related transactions for individuals.
Could you test it with some exchange? For experience, what banks policy say with reality is not the same.
ING works fine with cryptocurrencies exchange platforms, at least it was back from 2015 to 2017 but there is no reason the things be different