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Overview of the issue
Recently, some WPML users have reported that they are unable to translate the Link field assigned to buttons, text, or other widgets via WPML’s Translation Editor.
Please note that this is not the same issue as Oxygen Builder – Completed translations do not load on the front-end. However, if you are experiencing that issue, please follow the instructions there before attempting to fix the issue outlined here.
Next steps to resolve this issue
WPML team is jointly investigating official compatibility with the folks from Oxygen Builder to try and find a permanent solution to this issue (and the issue affecting translations not showing on the frontend). While we cannot guarantee any solution, expressing your interest in this effort to the Oxygen Builder team via their GitHub, Facebook page and/or user group can only help move things along.