Changed computer. Certificate no longer accepted

I switched my Raspbery Pi 2 for a Raspberry pi3.
And now the certificate no longer seems to be accepted by Sakia.
I already changed the key and remote ipv6 network on Duniter as the ipv6 address is different.

What should I do?

Trying to renew the certificate fails.

admin@Xroklaus:~ $ sudo yunohost domain cert-renew --force
Error: Wrote file to /tmp/acme-challenge-public/TH6t-IY0aBep7n4SYY_twgopTqaLyAKb7hsPVm6r6JE, but couldn't download
Error: Certificate renewing for failed !
Error: Traceback (most recent call last):
  File "/usr/lib/moulinette/yunohost/", line 382, in certificate_renew
    _fetch_and_enable_new_certificate(domain, staging)
  File "/usr/lib/moulinette/yunohost/", line 567, in _fetch_and_enable_new_certificate
MoulinetteError: [Errno 22] Signing the new certificate failed

Error: [Errno 22] Signing the new certificate failed

This might fix the issue:

But how to test it?

Copy paste the fixes manually?
Use an unstable version of Yunohost?
Wait for the new release?

I’d rather not want to code-dive into an unstable version.
I want to convince others of running Yunohost/Duniter for my currency.

As a current workaround, you should take a look at:

In addition to the [Errno 22] “signing certificate failure” problem, I also seem to have an [Errno 113] “No route to host” problem about retrieving public IPv6.

admin@Xroklaus:~ $ sudo yunohost domain cert-install --force --debug
228  DEBUG loading actions map namespace 'yunohost'
289  DEBUG extra parameter classes loaded: ['ask', 'password', 'required', 'pattern']
289  DEBUG initializing base actions map parser for cli
293  DEBUG registering new callback action 'yunohost.utils.packages.ynh_packages_version' to ['-v', '--version']
556  DEBUG initialize authenticator 'ldap-anonymous' with: uri='ldap://localhost:389', base_dn='dc=yunohost,dc=org', user_rdn='None'
560  DEBUG lock has been acquired
898  INFO processing action [13128.1]: yunohost.domain.cert-install with args={'no_checks': False, 'force': True, 'domain_list': [''], 'self_signed': False, 'auth': <moulinette.authenticators.ldap.Authenticator object at 0x76580590>, 'staging': False}
1119 INFO Starting new HTTP connection (1):
1124 DEBUG "HEAD / HTTP/1.1" 302 0
1126 INFO Now attempting install of certificate for domain!
1294 INFO Starting new HTTP connection (1):
1299 DEBUG "HEAD / HTTP/1.1" 302 0
1302 INFO Nginx configuration file for ACME challenge already exists for domain, skipping.
1303 DEBUG Making sure tmp folders exists...
4482 DEBUG cannot retrieve public IPv6
Traceback (most recent call last):
  File "/usr/lib/moulinette/yunohost/", line 278, in get_public_ip
    return urlopen(url).read().strip()
  File "/usr/lib/python2.7/", line 87, in urlopen
  File "/usr/lib/python2.7/", line 213, in open
    return getattr(self, name)(url)
  File "/usr/lib/python2.7/", line 443, in open_https
  File "/usr/lib/python2.7/", line 1035, in endheaders
  File "/usr/lib/python2.7/", line 879, in _send_output
  File "/usr/lib/python2.7/", line 841, in send
  File "/usr/lib/python2.7/", line 1242, in connect
  File "/usr/lib/python2.7/", line 822, in connect
    self.timeout, self.source_address)
  File "/usr/lib/python2.7/", line 571, in create_connection
    raise err
IOError: [Errno socket error] [Errno 113] No route to host
4492 INFO Prepare key and certificate signing request (CSR) for
10867 INFO Saving to /tmp/acme-challenge-private/
10868 INFO Now using ACME Tiny to sign the certificate...
10868 INFO Parsing account key...
10902 INFO Parsing CSR...
10930 INFO Registering account...
11880 INFO Already registered!
11881 INFO Verifying
12740 ERROR Wrote file to /tmp/acme-challenge-public/TH6t-IY0aBep7n4SYY_twgopTqaLyAKb7hsPVm6r6JE, but couldn't download
12741 ERROR Certificate installation for failed !
Exception: [Errno 22] Signing the new certificate failed
12742 DEBUG action [13128.1] ended after 11.843s
12742 DEBUG lock has been released