"Unexpected error"

Have a good day and a happy new year.
Trying to connect to Greek version of smart 3 always get error "Unexpected error"
Router ip is on 192.168.3.* and the rest of my network setup including home assistant is on 192.168.1.* so I don't know if this could explain the problem.
Here is the log.
`This error originated from a custom integration.

Logger: custom_components.speedport.config_flow
Source: custom_components/speedport/config_flow.py:64
Integration: Speedport (documentation, issues)
First occurred: 00:51:55 (9 occurrences)
Last logged: 09:30:58

Unexpected exception
Traceback (most recent call last):
File "/usr/local/lib/python3.11/site-packages/speedport/connection.py", line 21, in decode
ciphertext_tag = bytes.fromhex(data)
^^^^^^^^^^^^^^^^^^^
ValueError: non-hexadecimal number found in fromhex() arg at position 0

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/config/custom_components/speedport/config_flow.py", line 64, in async_step_user
info = await validate_input(self.hass, user_input)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/config/custom_components/speedport/config_flow.py", line 31, in validate_input
speedport = await Speedport(
^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/speedport/speedport.py", line 60, in create
await self.update_status()
File "/usr/local/lib/python3.11/site-packages/speedport/speedport.py", line 118, in update_status
self._status = await self.api.get_status()
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/speedport/api.py", line 116, in get_status
return await self.api.get("data/Status.json")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/speedport/connection.py", line 97, in get
return decode(await response.text(), key=key)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/speedport/connection.py", line 23, in decode
raise exceptions.DecryptionKeyError("Wrong decryption key") from exc
speedport.exceptions.DecryptionKeyError: Wrong decryption key
`

Thank you for your time