Problem with Mail Dispatcher in The Bat. How to decide?

Question

TheBat

Hello.
The problem is this: after reinstalling The Bat, it was not possible to connect its remaining mail directories on the hard drive to it. It was decided not to use these directories, but to create everything anew (fortunately, all letters are saved on the server). Recreated everything. There is a connection to the server.
But the trouble is that there are several tens of thousands of letters on the server and the window of the called Message Dispatcher simply does not appear. Although in the same program, when connected to another mailbox with a small number of letters, the Dispatcher appears normally.
I can't do without the Dispatcher. Maybe someone had such a problem? how did you decide?
PS The version of The Bat does not matter in this case.