Plug-in is missing

<kuid2：661281：85197：1> <kuid2：661281：85213：1>

They are:-

<kuid2:661281:85213:1> PBR Gravel 7 with Dirt - Seasonal
<kuid2:661281:85197:1> PBR Cobble Stones 2 - Seasonal

They are packaged with the DLC routes:-

<kuid2:515942:100169:21> Cornish Mainline and Branches - TRS19
<kuid2:154322:100063:19> ECML EDINBURGH - DUNDEE
<kuid2:620415:101000:15> Niddertalbahn - TRS19

I believe Niddertalbahn is still a free route, so you should be able to get them with that