One thing I noticed with my Wallbox Pulsar became obvious after I cut a large shrub down. Now I can see my charge port at night and I couldn't before. I have my charging set to start at 9:00pm an end at 3:00pm the next day. My rate drops at 9:00pm and I have an 80% charge in 2-3 hours usually. The reason I have the charge schedule lasting until 3:00pm is so that if I do a lot of driving the next morning and get back home earlier than normal the car will be charged a bit for evening use if needed. If it is charging at 3:00pm it just stops when the Wallbox quits passing power waiting until 9:00pm to start again.
Now after the shrub was cut - I plug the car in and it is set for 80% charge. Since it is before 9:00pm it can't charge because the Wallbox won't send any power until 9:00pm. But the car wants to charge so the white light at the charge port starts flashing periodically. After 15 seconds or so the red light comes on for up to a minute and then goes out. There is no schedule for this "I want to charge" routine that I have noticed, but it will do this several times before 9:00pm. Then right on schedule at 9:00pm the Wallbox opens up and the charge starts right on time. I had noticed the red light being on a time or two over the last 19 months, but thought it was a VW bug. Since I can see it clearly now, I think its perfectly normal. I have never had a missed scheduled charge with the Wallbox.