"Could heat from heat gun misalign Home button and data port?"に関する回答Heat can cause the plastic in the charging port to warp which sounds like thats what happened here as now you can not fully insert the charging port to charge the unit. Unless you put pressure on it. Did you get a new screen with adhesive and a home button already on the new screen? Or did you transfer the home button to the new screen?
"Power button not working after screen repair"に関する回答I'm have the same exact issue too. Did you find the a fix for this?