Respective is an adjective which means belonging or relating separately to each of two or more elements. Respectively is an adverb meaning separately or individually in the order already mentioned. Although the two words are very much related, they are different parts of speech and so are not interchangeable.
That being said, more effective technical writers often find the use of these two words unnecessary. Consider the example sentence in the graphic above. This sentence is grammatically correct. Now compare that sentence with this equally grammatically correct revision.
So respect the respective/respectively differences. Often technical writers can achieve more effective technical writing by avoiding the use of respective and respectively. And more effective technical writing better represents both you and your brands to your audience.