Can not start quests

Hi Tenno, could you tell us more information, such as what quests you can't unlock? Any of them? Are you using Cross Platform Save or starting from scratch?

Do you have any screenshots you could pass along?

In order to better understand what's going on, it would greatly benefit us to see your Game Logs. You can get logs by going into Options > Account > Send Error Logs. Once you've download logs to your device by selecting “Save to Files”, it’s time to send them along!

Sending Digital Extremes Your Logs

• Visit Warframe Support support.warframe.com
• Log in using your Primary Warframe Account
• Select “Submit a request” in the top right of the web page
• Select “Logs and Metadata”
• Use the Subject & Description to explain your issue with as much detail as possible Under “Category” select Files/Logs requested in Forums
• Drag your Logs onto the ‘Attachments’ field of the support ticket.
• Hit “Submit”
  
  Alternatively, you can upload your logs to Google Drive, Dropbox, etc and send me a DM on the forums.