How to properly configure the switch and VLAN in Kerio?

Question

Kerio

There is kerio. A dlink switch is connected to its internal port. It is necessary to allocate a separate vlan 2 for one user group, so that the rest of the network works as before.
1 The vlan2 subinterface was added to kerio
2 on the switch the ports for this group were marked access(untagged) vlan 2. all other ports remained in untagged vlan1 (factory default setting)
3 the port to which kerio is connected was tagged (trunk) for vlan1 (default ) and vlan2
network vlan 2 started working, and the rest of the network was gone. Is it possible to set up kerio so that the entire network works as before (without reconfiguring it in kerio on vlan1), but at the same time a separate vlan2 network is also allocated?

Answer 1

3 the port to which Kerio is connected is tagged (trunk) for vlan1 (default) and vlan2

You have a Trunk with tags 1 and 2 on the switch on the third port, but how is it on Kerio, it's not clear?
Does he accept tagged traffic for these two vlans?
I mean that earlier you had an interface on Kerio without parsing by tags and came to it from the Access 1 switch, and now you have replaced Access 1 with Tag1 and Tag2, which means you need to reconfigure the port on Kerio.