One problem here and part of the reason for the confusion is that the OP is trying to use a pretty unusual configuration
I do apologize for the confusion on my part forgetting I did buy a logger when I set this up. Since the initial install I never pulled the back off the console and all I ever worked with were the hub and the meteobridge. (I've never changed the batteries in the console either and will this weekend.)
I could see archive data in the Meteobridge dashboard so assumed it was doing the logging. However, after Hurricane Irma and not having power for a week or so I was surprised that all the data for the week was collected and saved. DUH, I should have realized there was a logger in the Vantage VUE console.
Meteobridge documentation has always talked about uploading to Weatherlink.com using the Weatherlink software on my PC and I did look at that when I set this up years ago. But I didn't want to pay the annual subscription and didn't think it was worth it. WeatherUnderground was the main thing I was interested in and it has worked well until about the last year or so. Now with WL 2.0 I do feel there is value in the Pro plan and started this process. Meteobridge is nice as it has features to upload to numerous other weather services besides WU, such as CWOP, PWS Weather, Weather Cloud, Open Weather Map, and several others listed.
Right now after setting the Archive Interval to five minutes everything looks fine in Weatherlink 2.0. Nothing is missing and the data is being saved in five minute intervals. I do look forward to the ability to upload all my archived data over the past years. Hopefully that will be possible someday. But I do have the records from the Weatherlink software and I can pull it into Excel and do whatever I want with it.
Thanks for the help!