I don't think so. The silver zones ought to be unlocked once you hit V1 or finish the main questline, whichever is earlier.

Hope this helps.

Cadwell’s Silver and Gold Updates

Silver and Gold alliances are no longer restricted by accepting and completing Cadwell’s quests, and will instead immediately unlock when you reach Veteran Rank 1.

•Upon the initial unlock, the first zone’s wayshrines will be displayed on the map for you to fast travel to. You can also jump directly to other player characters in those alliances.

•Silver and Gold content is also immediately unlocked for anyone who accepts Cadwell’s quest before reaching VR1.

•When accepting Cadwell’s Silver and Gold, your quest progress will be immediately updated for anyone who has already completed some or all of the objectives required for those quests (i.e. if you complete content in the Silver and Gold zones before taking Cadwell’s quests, you don’t have to play that content again).

•Completing Cadwell's Silver will grant you the Soul-Shriven Style Motif book; completing Cadwell's Gold will grant you a unique Collectible from Sir Cadwell himself. •For those who've already completed these quests, you will automatically receive the rewards.

•Every player character who has completed Cadwell's Silver will receive a Soul-Shriven Motif in the mail, and anyone who has completed Cadwell's Gold will receive the Collectible directly to their Collections UI.