If I have created my ecommunity account first, can I use that account to log into ecloud or do I have to create a new one?
You will have to create an /e/ ID. This /e/ ID account is used while setting up your phone , logging into eCloud
The community account is only for logging into this forum.
In future we may attempt to unify all these accounts.
I’m strongly agains unifying /e/ and e.community account. If one platform is breached server side, the other service is compromised too.