I don't know any limitations. You should be able to use all versions of RoboDK.

You wil need to check how the byte array looks like, where is the string starting and ending. Are there bytes inside the byte array which define the end of each string?. There seems a string, a timestamp and another string included. You can transfer an array of bytes to a string with methods like this: https://www.geeksforgeeks.org/different-ways-to-convert-char-array-to-string-in-c-sharp/

That's a good idea. I will create a public Github Repository for User Extensions.