I was subscribed to a Google group at my work place, and I was getting all its messages. Someone sent a spam to that group and instead of blocking the person, I mistakenly spammed the message and unsubscribed from the group. Upon realizing, I am again trying to subscribe to the group, however, I cannot select 'notify me for every new message' because it is not highlighted. See the picture below:
I tried to again subscribe but did not get any message for a week. Then, I again left the group and when I try to subscribe again, even while trying to apply for membership, I cannot select 'notify me...' because it is not highlighted. I have already seen google groups help, e.g., this link but it did not help.
Any help is appreciated, since this group is important for me.