I am migrating to a new phone. WhatsApp offered firefox as an option for storing its passkey. That took me to the connection and synchronisation process which the new phone said had failed. However all my tabs and other passwords appear to be syncing. Now selecting firefox to store the WhatsApp passkey takes me back to the failure page every time. Any idea how to restart the passkey addition to firefox process? WhatsApp won't work whilst I'm hung up in limbo between the two apps.