This is a blocking function, meaning that Blynk won’t be able to run and thus your program will most likely crash or become unresponsive. These should really be removed, or substituted for Blynk compatible code.
You can see some of the alternatives to using delay(); in other posts on the forum.
As to the main issue highlighted in your post, I’m not sure what your issue is. Could you possibly try putting it into different words?