TDA didn't save ride ?

Big Problem here, too. Very annoying when you are on the festive500 challenge... disappointing 

A big problem. This start to happen when Garmin changed the login to be with the Garmin connect account. I already lost several rides

I lost 4 activities in the last zwo days. Very disappointing.

I lost 4 activities in the last zwo days. Very disappointing.

I have the same problem and lost my 4 activities in a week. It happens after migration to Garmin account. And here the errors from log file. Please have a look and analyze it

2020-12-29 19:16:55.888 +01:00 |  | 0000D594 | UploadableActivity.swift:228 | tryUploadToCloud(forceDiscard:forceRequestConsent:)
2020-12-29 19:16:55.920 +01:00 |  | 0000D594 | MainCenter.swift:64 | MainCenter: control
2020-12-29 19:16:55.920 +01:00 |  | 0000D594 | WidgetsMetalView.swift:42 | Metal course: not assigned
2020-12-29 19:16:56.075 +01:00 |  | 0000D594 | UploadableActivity.swift:280 | Course Ended -> Creating activity for existing course
2020-12-29 19:16:56.075 +01:00 |  | 0000D594 | UploadableActivity.swift:343 | upload(courseUuid:basedOnCourseUuid:completion:)
2020-12-29 19:18:00.006 +01:00 |  | 00011F9A | TrainingService.swift:285 | Result has old data
2020-12-29 19:18:56.060 +01:00 |  | 0000E513 | TrainingService.swift:285 | Result has old data
2020-12-29 19:18:56.085 +01:00 |  | 0000D594 | TrainingServiceQuery.swift:196 | The operation couldn’t be completed. (AXCommon.ErrorResponse error 0.)
2020-12-29 19:18:56.102 +01:00 |  | 0001CFD8 | TrainingService.swift:285 | Result has old data
2020-12-29 19:18:56.144 +01:00 |  | 0001BA34 | TrainingService.swift:285 | Result has old data
2020-12-29 19:18:56.147 +01:00 |  | 0000D594 | TrainingService.swift:309 | The operation couldn’t be completed. (AXCommon.ErrorResponse error 0.)
2020-12-29 19:18:56.164 +01:00 |  | 0000D594 | Files.swift:75 | An error occurred while trying to upload a new file: The operation couldn’t be completed. (AXCommon.ErrorResponse error 0.)
2020-12-29 19:22:19.081 +01:00 |  | 0001E226 | TrainingService.swift:285 | Result has old data

The same problem with me. The loss of several rides 

Still happening. New to Tacx since Xmas. Lost 2/5 activities already. Most recent was an FTP test that I thought I did good on.

Yup, just done my first ride and it didn’t save, 20 miles lost

2 of 4 missing activities were now uploaded after 3 days. 2 activities are still missing.