I would add electrify america as your preferred public chargers in ABRP.
The soc is an estimate. The Battery temp effects the estimate. Was hot when you went to bed. Cold on awakening. 5% is larger than I have seen personally but I have seen 3% before.So I made it home last night just fine with 28% left. Was a little concerned because it dropped to 23% when I got in this morning. I found a destination charger that's J1774 a block from my work that's free to use. It says 17mile/hr. on the dash when plugged in. It's been plugged in about two hours and my app says it's at 35% now. Kinda slow but it's free so whatever.