I've had this issue for a long time now. I have been unable to link or see the [Axi A5 Relic] in the codex & void refinement console (preview). I have seen some people able to link it and others not. Here are some screenshots I took when I did have the relic. An example of a relic I don't have is the Meso N10 relics and yet I can see this in the void relic console as a preview, in the codex and I am also able to link it as well. I am able to preview and link relics I don't have. There seems to be an issue solely with the Axi A5 relic in this game.
Screenshots: https://imgur.com/a/X3bSwG6 (Axi A5 Relic)
Screenshots: https://imgur.com/a/xpCDdlC (Meso N10 Relic)
Attempt to fix it (provided by Warframe support rep)
- Rebooting computer and power cycling modem and router
- Verified and optimized download cache in the Warframe launcher
- When the game is not running, went to %LOCALAPPDATA%\Warframe and deleted all the funny named folders (like F36423HGJYG5434000 ) and any .cfg files