I'm not sure how to handle the situation. I'd like different viewpoints so I can (hopefully) better decide how we'd like to move forward.
For context: we live in Europe. Have 2 children (3 and 6 yo). We are not strict with screentime per se, but we don't do tablet (only very very very occasionally, like a 22 hr travel to see grandparents). TV is mostly educational programs or "old fashioned" films like the 1990's Lion King. Also Bluey. There is the occassional Paw Patrol at rainy days but we actively try to limit those types of content. We are active and like to take them outside etc.
We live in an area with barely any other children. Last year a new family moved into the house across the road and they have a 7 yo! Our children get along well and they love playing together. Over summer we took them outside often for a play. Great!
We have noticed this child is mainly on screens (tablet). Whenever our children go over there, they play on the tablet together. There are only very very little toys at their home. It has come to my attention that they play \[ I am not allow to mention this but it is an online gaming platform starting with R and ending with OBLOX \] together. This is not something we'd like our children to experience (yet), also because there is no supervision when they play. I have once asked the neighbour (very very kindly) to not let ours on the tablet. That time they didn't which was great. Their child doesn't really want to come to ours, even though we have plenty of toys that the child also enjoys. I don't really know why. Once they brought the tablet over to come play at ours, but I did say that in our home we don't play together on screens.
Our children just went over to play there (again) and I can see them stuck on a chair watching the tablet again. I am getting increasingly uncomfortable with the situation but at the same time don't know how to handle things.