Archos Safe T cosigners broken in multisig wallets

Hi, I am training to use Multisig Electrum wallet. I created a 2/3 cosign wallet. 2 usual Wallet (we call them Wallet-1 and Wallet-2 here) in electrum and 1x Harware wallet with Archos Safe-T. (We cal them Wallet-Hardware) All last version are installed.

Firstly, I restore my Wallet-1 with the Wallet-1 seed + 2 Master Primary Key (W-2 and WH)

I tried to send some bitcoin to Wallet-3 with hat Wallet-1.

After I signed the transaction with this Wallet 1, I can't send the transaction to cosigner through Pool, I got message :

Failed to send transaction to cosigning pool:
[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)

I saw on internet, that it will probably always be impossible to share cosigning transaction if one of the cosigner is an Hardware Wallet (not sure I properly understand, my English is not perfect).

Then... I tried MANUAL Method...

I exported COSIGN.txn file from Wallet-1 (1/2 sign).

I connect on Hardware Wallet, open COSIGN.txn file... Put my digit code. Click on confirm and confirm again on Archos Safe-T.. I see signing progress bar... All seems ok. But, at the end, the TXN file still display 1/2 sign...

Then, I tried to send some bitcoin directly from this Wallet-Hardware account, same problem happen, status still be "UNSIGNED" when I try sign with the Archos Safe-T Mini.

To sum-up, it's impossible to sign with Archos Safe-T Mini through electrum.

Review the multisig cosigning-pool and manual COSIGN.txn signing paths described in the report. Start by reproducing the certificate verification failure and the Archos Safe-T Mini signing flow; done means the hardware cosigner adds its signature and the transaction is no longer shown as unsigned.