The following fields are not translating via WPML String Translation using the settings in M2P for the Account Page view output by the ms-membership-account shortcode:
Activities – Title
Your Memberships – Membership Name
Your Memberships – Status
Invoices – Membership
Any field that uses a placeholder string (%s) is not translating.
Additionally, none of the fields applied under Personal Details as part of the BuddyPress xProfile (even with the translation addon enabled and all translations set) are translating either.