Yes the account have healthy transactions and the institute provides me the loi in accurate format. When should I reapply??The funds that you're showing. Does that account have healthy transactions of credit and debit in the past 6 months or is it just a few big credit transactions? VO perceives it as a "manufactured" proof of funds. Did the institute provide an LOI - Letter of Invitation in the desired format? https://www.canada.ca/en/immigration-refugees-citizenship/services/visit-canada/business/bring-business-guests/letter-invitation.html