Hello! Can I ask what the technical problems are? 

If you are playing the song without a capo, the frets notated in the tab will still be correct, since the fret locations are relative to where the capo is located.

Verse chord: A7 (open A str, 2nd fret D, G, and B strings, 3rd fret high E string)

Chorus chords: G and Em are the regular open chord shapes as you've learned them. The C chord adds a low G note onto the chord - it's just a regular C with the 3rd fret of the low E string added. The A7 chord is the same as from the verse.

Bridge chords: A, E7, and D7 are the regular open chord shapes as you've learned them.

The best way to understand where the variations occur within the song is to watch the Performance video and follow along with the notation. Ch2 and Ch3 end with a single strum on C and single strum on E7. Ch4 ends with an extra bar of strums of C then a single strum on G.

To work on getting to the 12th fret accurately after playing a chord - loop the bar before and the bar after the transistion. Slow it way down, and repeat over and over. Slow it down enough that you are still staying in time when making the transition. Repetition at slow speeds is the only way to program your fingers and muscles to make this transition smooth.

Hope this helps - let me know how it goes!

Mike