Bulding true dongle emulator can solve all your problems. Here is the part of my source code:

;-------------------------------------------------------------------------
BeginProc spro_Find1st
xor ebx, ebx
mov word ptr _pDataPatch, bx ; Restore previous state
mov word ptr _pAlgoPatch, bx ; Restore previous state
mov word ptr _pLicPatch, bx ; Restore previous state

mov bl, byte ptr [edi._RBP_SPRO_APIPACKET.bUnitNumber]
rol ebx, 10h

mov bx, word ptr [edi._RBP_SPRO_APIPACKET.DevId] ; 100% bug support
cmp bx, _DEVID_DUMPER ; DevID==FFFF check
je @@dumper

movy DeviceID, ebx ; Save Device Id

call _DongleScan
jnc @@found

push ebx
call _LoadKey ; At Prog
jc @@quit

@@found:
call GetDongleMemOffset ; ESI points to Memory

mov ax, word ptr [SP_CELL_SN*2+esi] ; Store SN of dongle into packet
mov word ptr [edi._RBP_SPRO_APIPACKET.wMemoryContents], ax

mov ax, word ptr [SP_CELL_DI*2+esi] ; Store SN of dongle into packet
mov word ptr [edi._RBP_SPRO_APIPACKET.wMemoryAddress], ax

mov eax, SP_SUCCESS or SPRO_STATUS_BASE
@@quit:
ret

;---------------------------------------------------------------------------------
; Scan for 0xFFFF case of search dongle
;
@@dumper:
movx esi, pKeyCell
mov eax, dword ptr [esi.Cell._DevId]; Also take UnitNo
movy DeviceID, eax

jmp @@found
EndProc spro_Find1st
;
;-------------------------------------------------------------------------
BeginProc spro_FindNext
movx ebx, DeviceID ; Save Device Id
cmp bx, _DEVID_DUMPER ; DevID==FFFF check
je @@caseFFFF

rol ebx, 10h
mov bl, byte ptr [edi._RBP_SPRO_APIPACKET.bUnitNumber]
inc bl
rol ebx, 10h

call _DongleScan
jnc @@found

push ebx
call _LoadKey
jnc @@found

@@absent:
mov eax, SP_UNIT_NOT_FOUND or SPRO_STATUS_BASE
ret

@@found:
call GetDongleMemOffset ; ESI points to Memory

mov ax, word ptr [SP_CELL_SN*2+esi] ; Store SN of dongle into packet
mov word ptr [edi._RBP_SPRO_APIPACKET.wMemoryContents], ax

mov ax, word ptr [SP_CELL_DI*2+esi] ; Store SN of dongle into packet
mov word ptr [edi._RBP_SPRO_APIPACKET.wMemoryAddress], ax

mov eax, SP_SUCCESS or SPRO_STATUS_BASE
ret
;---------------------------------------------------------------------------------
; Scan for 0xFFFF case of search dongle
;
@@caseFFFF:
mov eax, SP_UNIT_NOT_FOUND
ret

movx esi, pKeyCell
mov ebx, dword ptr [esi.Cell._DevId]

call _DongleScan
@@match:
cmp ecx, 0
jz @@absent

add esi, (size Cell)
mov ax, word ptr [esi.Cell._DevId]
mov word ptr [edi._RBP_SPRO_APIPACKET.wMemoryAddress], ax

mov esi, [esi.Cell._Memory] ; Get ptr to memory
mov ax, word ptr [SP_CELL_SN*2+esi] ; Store SN of dongle into packet
mov word ptr [edi._RBP_SPRO_APIPACKET.wMemoryContents], ax

mov eax, SP_SUCCESS or SPRO_STATUS_BASE
ret
EndProc spro_FindNext