I appreciate you need to ask questions, but I have already pointed put the general issue (you need to upgrade to keep working with Blynk, and when you upgrade you need to keep abreast of required changes).
So anyhow… since I do not remember all the details, I need to look up each answer I give you … so you might as well read and search for them yourself
e.g. Searching this forum for your error found this…
… so you might as well read and search for them yourself 