Rightly or wrongly, I think the best you can do is make a lot of effort yourself. I totally understand how you’d like it to be (me too in my own situation) and lockdown is probably accentuating things but with so much distance between you, I think you’ve got to get your grandchildren more interested...maybe take some photos of the area you live in...or things you are doing.....even if lockdown...and email them to the girls. Or send postcards...or relevant cards....just some ideas...I’m sure you’ll have more.If they have any interests, use those, to start conversations. Young children are naturally selfish to an extent...everything is about them at that age. If they’ve stayed with you, when you FaceTime, walk around the house and show them the rooms again...and anything interesting...my gd likes to see the plants I grow and the flowers that are coming. Sometimes, I play a simple game with her on FaceTime too....or I show her the food I’ve cooked. She then wants to do the same back, next time. Or maybe you could read to them..They’re unlikely just to sit and have a grownup conversation with you. It’s all about capturing their interest. It would be costly but maybe send them a magazine or something light in the post....or do some online shopping for them. It all sounds one sided I know, but I think we have to work at it, to keep these relationships going, especially now. Good luck.