I received another email from the boys today. I prayed about whether to contact my H, and felt comfortable enough to do so. Tonight, I forwarded the boys' last few emails and my most recent picture to my H.
I thought he'd appreciate reading the boys' email especially since their phone has been out of service and my H hasn't been able to reach them either.
I also "responded" to his previous reminders about the basement work by saying I know he reminded me a couple of times about he basement work and to just let me know what suits him. I mentioned this topic to let him now the door is still open for him to come visit me.