How can I set Talkback back to how it was prior to the most recent Talkback update?

Today I updated Talkback to the most recent version available in the Google Play Store. It is now more difficult/impossible for me to navigate the touchscreen. Scrolling up/down is now a challenge; Talkback pops up a notification regularly asking how I want to navigate (lines, paragraphs, characters, words...) As a totally blind person, these inconveniences are a problem. How can i set Talkback back to the way it was prior to the recent app update? I don't know what type of Android phone I have.

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