ipdiscover: no automatic election. Work only if manually forced

ipdiscover: no automatic election. Works only if manually forced.

Srver runs on Ubuntu 20.04.3 LTS
Ocs server Linux/Unix Server 2.9.1
Windows Agent 2.9.0.0 (64 bits)

Already tried everething possible.

my settings:
IPDISCOVER
Max number of computers per gateway retrieving IP on the network

ON
2
computers

IPDISCOVER_BETTER_THRESHOLD
Specify the minimal difference to replace an ipdiscover agent

1
day(s)

(Must be greater than or equal to 1)

IPDISCOVER_LATENCY
Ipdiscover latency

100
milisecond(s)

(Must be greater than or equal to 10)

IPDISCOVER_MAX_ALIVE
Maximum number of day before an ipdiscover computer is replaced

1
day(s)

(Must be greater than or equal to 1)

IPDISCOVER_NO_POSTPONE
Disable the time before a first election (not recommended)

ON

IPDISCOVER_USE_GROUPS
Enable groups for ipdiscover (for example, you might want to prevent some groups to be ipdiscover agents)

OFF
IPDISCOVER_LINK_TAG_NETWORK
Link Ipdiscover network to computer TAG
Logout / Login after updating this configuration

OFF
IPDISCOVER_PURGE_OLD
Purge old IPDiscover data

OFF
IPDISCOVER_PURGE_VALIDITY_TIME
Validity time (in days) of an IPDiscover data

30
day(s)

(Must be greater than or equal to 1)

It used to works with my old cenots server with ocs 2.7Rc..and 2.4 win 32 client if I am not mistaken. Ideas? Thanks!