Cannot start Oracle Autonomous Database because its resource plan does not exist

Summary:

Hello! I'm not sure if this is the right place to ask (never asked a question on Oracle Community before), but this seems to be where my OCI interface leads me to. I'm trying to start one of my 2 autonomous databases. however, whenever I do, it just fails and says "resource plan OLTP_PLAN does not exist. cannot start database"

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The only other thing I can find is that it tells me to "Refer to JobId <UUID> and WorkRequestId <UUID> when opening a Service Request at My Oracle Support.", but they seem to change every time I try to start it; I'm not sure if the values are linked to my account or anything, but if not I'll paste them as a reply.