I had backed up some large files on  my Box Drive a while back. But now these files are not backed up. The reason mentioned is that these are “file size larger than the maximum size limit for this account type…….”

My simple question is, since I was able to upload this file size earlier (that this large is already there in my Box drive is proof enough) and now I am not able to,  if my account has been downgraded or you unilaterally put this new limit on my account just to extract money from users like me?

Can someone with proper knowledge and authority comment on this?