"Roger and I appreciate what you did" is correct grammar
Both are possible and correct.
Roger Berry has written: 'English grammar' -- subject(s): Grammar, English language
Roger Kitson has written: 'A short introduction to English grammar'
The pronoun in the sentence is "you."
Roger Dennis Cherry has written: 'A brief guide to basic writing' -- subject(s): English language, Grammar, Report writing, Rhetoric
Roger Kingdon has written: 'A Grammar of Spoken English' 'English intonation practice' -- subject(s): English language, Textbooks for foreign speakers, Intonation
Roger is a proper noun, the name of a person. A proper noun is always capitalized.
Held his breath.
Roger the chef, has been cooking dinner for me for many years.
Life with Roger
Roger has always enjoyed the companionship of his pet basset hound.
In grammatical terms, the term advise is a verb used in sentences, and example would be- "Jane advised Bob that his appointment was for 10:45am". The term Advice is a noun, an example of how this would be used in a sentence is "Lisa gave Roger advice on how he should handle his boss".