Since late last evening there where some issues with the Suunto services.
We have worked during the night and this morning to restore the service availability. At the moment the service is back online, meaning that your past activities should be syncing to partners (if you have not disconnected the service!) and operation should be back to normal.
In case you have some activity not synced to partners:
Go to the activity details in your Suunto app
There is an option to download the FIT file
Once that file is downloaded you can upload it to the service of your preference.
Thank you all for your patience and sorry for the inconvenience.