Comment (by Lucas Timotheo Sanches):

Hello Alejandra.

Good to hear that things seem to be working out.

Regarding your warning, it is difficult to say. Dos it crash your simulation at any point or is it just a warning?
Can you check the output from PunctureTracker to verify that the puncture locations reported at least make sense?

Regarding subcycling, I’m not a specialist and not really sure since the feature is quite new. You should probably open a new ticket with that question, or better yet, send your question to the mailing list so that we can forward it to the the appropriate developpers.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2861/running-qc0-with-carpetx