I have completed my training on 1st Feb 2021 and filled the form 108 and 107 also for extension bit that time I don't know the which stamp is to be executed on form and I attach it with revenue stamp then it got rejected again again and now in June after completion of 60days I stamped the paper with special adhesive stamp of Rs 50 but not it is rejected due to completion of 60days what should I do now?