Its almost certainly the Iphone, that is forcing the icloud mail to go into the archive.
Lets try t o change the settings on the iphone, and future mail should go into t he inbox as normal Victor.
heres how to change that setting
View the page belowhttp://www.imore.com/how-enable-message-archiving-icloud-mail-iphone-and-ipad
This page tells us how to turn on
When you get to the section where it shows to turn it on, instead, we want to tap ON and turn it to off.
Lets do this for all email accounts showing on your iphone.. And once complete.. Your mail should no longer go to the arhive folder, but instead.. Should go to the inbox.
Let me know if this works, and if not, let me know if you run into any issues completing these steps.
If my answer helped, please click one of the smiley faces to rate the solution, and then click the green submit button to rate the answer. We can still communicate after rating, as rating does not end the conversation.
If my answer did not work, please wait to rate the answer and instead send me a reply so that I can continue to assist you as needed.