Tronity not staying authorised. SoC not being synced

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/tronity-not-staying-authorised-soc-not-being-synced/
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I have linked and re linked tronity a number of times now but no matter what I do, it always reverts to 'not authorised' after a couple of days. The SoC is out of date so I can't use the app to plan journeys. Tronity shows ABRP as approved