It can be overriden in default.xml in your etc folder like below:
<block class="Magento\Customer\Block\Account\Link" name="my-account-link">
<argument name="label" xsi:type="string" translate="true">My ...
The strange thing for us though was that the issue only affected some of the product images, not all.
Generally you need to do the following things.
First create the different roles and assign permission to that role from the magento admin.
Now in front-end registration process, add the extra fields according to your requirement.
Create the magento observer or plugin according to requirement for the user registration process. When user register ...