Hello,
Glad to hear that you resolved the 60% issue.
If you want to contribute a french translation, you are very welcome. You can email me the .po file and I will include it in the next release.
I do not yet have plans for the Lightning network.
If you want to retain the passphrase forever, go to Wallets -> Cron job and set Time to retain withdrawal secrets to 0. If you want the passphrase retained for one year exactly, set the value to 365*24*60 = 525600 minutes. Then, go to your adapter and enter the passphrase again.
If you want to become a premium member, visit the homepage and click on the Become premium dashed-slug member button.
regards