Mikrotik - VPN - error

Zdravim,

vytvoril som VPN na mikrotiku L2TP/IPsec protokolom.

Mam taky problem, ze niektory ludia sa pripoja v pohode a niektory nie - Windows 10. Cez android to ide tiez v pohode.

Pri pokuse u niektorych mi pise v logu:

ipsec, error failed to pre-process ph2 packet.
ipsec, error failed to pre-process ph2 packet.
ipsec, error failed to pre-process ph2 packet.
ipsec, error failed to pre-process ph2 packet.
ipsec, error failed to pre-process ph2 packet.
ipsec, error phase1 negotiation failed die to time up xx.xx.xx.xx[500] <=> xx.xx.xx.xx[29073]1dc8n465e94s6aef:4083a96980885ff()

Nastavoval som to pomocouo toho navodu: https://babcuvpisecek.com/sitarina/jak-nastavit-l2tp-ipsec-vpn-na-zarizenich-mikrotik-funkcni-step-by-step-navod/

vedel by mi niekto poradit? Trapim sa stym uz nejaky ten den. Dik

Na mikrotik supporte ti povedali co, kedze predpokladam ze si ich uz kontaktoval.

upgrade firmwaru ale nepomohlo stale to iste