I quickly did some tests. First, I was wondering that you installed the Auto-Translation Add-In. Why and how did you do it? The Auto-Translation Add-in is part of the standard installation and no further installation is necessary. I did my tests with v18.0.192.0 which is the latest CU of Passolo 2018. I repeated the settings you described and was able to properly do a pre-translation:

So if it doesn't work on your end, it might have a different reason. If it still doesn't work, you may need to log a case into our support portal at https://gateway.rws.com/ 

I quickly did some tests. First, I was wondering that you installed the Auto-Translation Add-In. Why and how did you do it? The Auto-Translation Add-in is part of the standard installation and no further installation is necessary. I did my tests with v18.0.192.0 which is the latest CU of Passolo 2018. I repeated the settings you described and was able to properly do a pre-translation:

So if it doesn't work on your end, it might have a different reason. If it still doesn't work, you may need to log a case into our support portal at https://gateway.rws.com/ 

Sorry for the extra long time in getting back for this.

I ended up creating a support ticket.

Adrian from support did some detailed checking and it turned out to be config.

Basically, on our LW account, I regenerated the Client Secret key (I did this to config a program I wrote for using Trados Studio to do MTs using LW). 

I had not realised that the account we have on eu.cloud.trados.com needs to have it's Client Secret updating too.

Apparently the default behaviour if the key does not match is to only to allow the Baseline model to be used, but the Baseline model is no longer available.

I guess it would have been "nice" to have Passolo pretrans tell me this, but I have made a note in case I regenerate the secret key again.

Thanks

Mark