phonerlite: 2.98

LAN direct connection IP to IP

Network: 
Protokoll: UDP
[] Session Timers
[X] Multicast DNS
[] UPNP NAT
[] IPv6
[X] QoS
[] CTI
[] Windows Firewall
[] Dual-Stick
[X] GRUU

Codecs:
[X] G.711a
[X] G.711u
[] DTMF Info
[] SRTP
[] SAVP
[X] ZRTP
[] G.726 

Problem description:

Two phonerlite 2.98 endpoint via LAN cannot create a ZRTP session. The call builds but only unencrypted without ans SaaS code. It worked before for sure with an earlier version. Is this working as designed and this feature is not implemented anymore or just a bug? Thank you for your answer