Some users may receive an error message when purchasing Connects or may have purchased Connects but don't yet see the Connects credited.
We would like to let you know that our engineers are aware of this issue and they are working as fast as possible to resolve it. We will update this thread as soon as we have more information. You can also find more information on the Upwork Status page.
Edited to add information.
We would like to let you know that this issue is now resolved. If the issue presses on your end let us know and we will be happy to assist you further.