Unable to activate keyless modules in DCS 1.5.8

[LucShep]

Hello,

Before anything, I'm aware that this is the DCS 2.5 section, just posting here as the section for older versions are "read only".

I've been running DCS 2.5 (currently latest DCS 2.5.6 stable) for about two years now but, for preference reasons, I've made a separate installation to run an older version of DCS, specifically 1.5.8, still available for download from Eagle Dynamics. 

 

This 1.5.8 installation is working perfect itself (actually surprised how good it still holds!).
Already have modules with StarForce key working fine in it, namely the F-5E Tiger II, F-86F Sabre, Black Shark 2, Mi-8MTV2, and Flaming Cliffs 3 - just had to manually insert their respective license keys on prompt. 

No issues there.

 

The problem is that I'm unable to activate Keyless modules in DCS 1.5.8., specifically these modules (purchased within the last two years):
 

- DCS: AJS-37 Viggen
- DCS: AV-8B Night Attack V/STOL
- DCS: MiG-15bis
- DCS: SA342 Gazelle (got from Helicopter bundle pack sale, Steam)
- DCS: UH-1H Huey (got from Helicopter bundle pack sale, Steam)
- The Museum Relic Campaign

- DCS: NS 430 Navigation System
- DCS: NS 430 Navigation System for Mi-8MTV2 Cockpit

 

I've searched high and low for solutions, already did clean and repair on the installation, etc, but nothing helped... still unable to activate these modules (it asks for a key, but products are keyless).

Can you please help me activate these modules in DCS 1.5.8?
Thanks in advance for any assistance.

PS:  I already opened a ticket on support.

Edited January 16, 2021 by LucShep

[LucShep]

Problem solved by ticket, though not for all modules unfortunately (limitations of older versions and new Keyless modules).

 

Many thanks Mike and Alexander (@E.D.)  for the swift assistance, much appreciated.