Follow @Digidigm advice above for future plotting.
As far as your plot filename, it’s what it is supposed to be…it’s just easy to confirm this way if you used the wrong numeric id…
All I can say is that your first error I had to search about, and all that was suggested with those was that the person needed to replot. But if you’re mining fine now, I really don’t know what the issue was.
As for the deadline limit error, if you set your miner deadline to the same as the pool, you won’t see that anymore. Basically, you’re just submitting a deadline higher than what the pool accepts.