Just bringing the temp up won’t likely be enough. You will need to rouse the yeast up from the bottom if the temp was that low for any sustained period. It still may take a day or 2 to get anything going though. You may be better off just adding more yeast via re-hydrating after getting back up to temp
I accept that I may always be the veteran nubie at this. It helps to get reassurance for what to do. I opened the ferementer after the temp read 68 and dumped in another packet of -05. It’s now bubbling vigorously. I also finally got an inkbird temp controller for my old touchy refrigerator. It was reading 66 on low with the freezer off so I though it would be fine, then it went down to 38. Anyways, smells really good and fermenting. Hopefully no infection from the couple days of cold temps and then the opening of the tank. The inkbird is really cool, I mean it prevents if from getting too cool, but at the same time is cool, which in and of itself is cool. Should have gotten one a long time ago.