Hello @calvinwy,
Your second issue after you created the errors.txt file you had to run source scripts/setup.sh before you go to terraform commands since your terminal crashed after terraform apply -no-color 2> errors.txt. There is this post that might help you from other learners to delete those resources about your last issue. After waiting for a new lab session those resources seems to be cleared and you could also submit this form for a lab refresh, note that it takes 2 business days to complete.
The email message that you got is not in my knowledge and perhaps a staff @Mubsi knows better about active subscriptions and deadlines. Hope it helps