[SR-Users] ERROR: registrar [save.c:598]: test_max_contacts(): invalid cseq for aor <rene>

Hi list i've been working with t_suspend, t_continue and async sleep, now the problem it's with register users, the softphones are frozen when try to establish a session with kamailio, now my users can't register and the only error i got is this: ERROR: registrar [save.c:598]: test_max_contacts(): invalid cseq for aor <rene> my kamailio config: # ----- registrar params ----- modparam("registrar", "method_filtering", 1) /* uncomment the next line to disable parallel forking via location */ # modparam("registrar", "append_branches", 0) /* uncomment the next line not to allow more than 10 contacts per AOR */ modparam("registrar", "max_contacts", 30) # max value for expires of registrations #modparam("registrar", "max_expires", 3600) # set it to 1 to enable GRUU modparam("registrar", "gruu_enabled", 0) #!ifdef WITH_USRLOCDB modparam("usrloc", "db_url", DBURL) modparam("usrloc", "db_mode", 2) modparam("usrloc", "use_domain", MULTIDOMAIN) modparam("usrloc", "hash_size", 15) #!endif