If you read the patch notes either in the link at the beginning of this thread, or right inside your launcher window before you hit play... you will find the following:
August 1, 2017
The Patch Updates:
- Fixed power set animation syncing which prevented many powers from working
- (and all the other updates)
...
The Notes:
- There is an issue with the client that often results in the client missing the servers handshake, resulting in the server ignoring the client's later attempts at connecting. This is resolved by closing the client and reconnecting. If the server times out on the client after you created a character, it will be available when reconnecting after the application reboot. This issue is being resolved now
- This issue has compromised mission instance entrances as players aren't able to load out of the main world instance at the moment. Resolving this issue will allow us to open the warehouse, laboratory, sewer, and office mission instances. We're working diligently to fix this problem to make all missions properly available.
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I highlighted the notes for the point of interest. It's a known issue for everyone. They'll fix it.