me too.
this is the error in the log, I have tried with 0.81.1 and 0.82.2:
2018-10-29 17:49:14 WARNING (SyncWorker_3) [sleekxmpp.basexmpp] fulljid property deprecated. Use boundjid.resource
2018-10-29 17:49:18 ERROR (read_thread) [sleekxmpp.basexmpp] day is out of range for month
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/sleekxmpp/xmlstream/xmlstream.py", line 1492, in _process
if not self.__read_xml():
File "/usr/local/lib/python3.6/site-packages/sleekxmpp/xmlstream/xmlstream.py", line 1564, in __read_xml
self.__spawn_event(xml)
File "/usr/local/lib/python3.6/site-packages/sleekxmpp/xmlstream/xmlstream.py", line 1632, in __spawn_event
handler.prerun(stanza_copy)
File "/usr/local/lib/python3.6/site-packages/sleekxmpp/xmlstream/handler/callback.py", line 64, in prerun
self.run(payload, True)
File "/usr/local/lib/python3.6/site-packages/sleekxmpp/xmlstream/handler/callback.py", line 76, in run
self._pointer(payload)
File "/usr/local/lib/python3.6/site-packages/sleekxmpp/features/feature_starttls/starttls.py", line 64, in _handle_starttls_proceed
if self.xmpp.start_tls():
File "/usr/local/lib/python3.6/site-packages/sleekxmpp/xmlstream/xmlstream.py", line 889, in start_tls
cert.verify(self._expected_server_name, self._der_cert)
File "/usr/local/lib/python3.6/site-packages/sleekxmpp/xmlstream/cert.py", line 133, in verify
not_before, not_after = extract_dates(raw_cert)
File "/usr/local/lib/python3.6/site-packages/sleekxmpp/xmlstream/cert.py", line 111, in extract_dates
not_before = datetime.strptime(not_before, '%Y%m%d%H%M%SZ')
File "/usr/local/lib/python3.6/_strptime.py", line 565, in _strptime_datetime
tt, fraction = _strptime(data_string, format)
File "/usr/local/lib/python3.6/_strptime.py", line 528, in _strptime
datetime_date(year, 1, 1).toordinal() + 1
ValueError: day is out of range for month
2018-10-29 17:49:24 WARNING (MainThread) [homeassistant.components.vacuum] Setup of platform ecovacs is taking over 10 seconds.
...
ValueError: day is out of range for month
2018-10-29 17:50:14 ERROR (MainThread) [homeassistant.components.vacuum] Setup of platform ecovacs is taking longer than 60 seconds. Startup will proceed without waiting any longer.
I have restored to version 0.80.3 and Ecovacs works again.