Firts you filed all your retruns and than visit E Way Bill portal and click the search option they show list you click last option UPDATE BOLCK STATUS and enter your GSTIN and captcha they show your E Way Bill Status you click the update GST Portal option. after this process your status will be change to unblock.
If the blocked tax payer has filed the Return on the GST Common Portal, then next day morning his
GSTIN is unblocked on the e-way Bill system and allow him to generate the e-way bills.
If the tax payer wants to generate the e-way bills immediately after filing the Return, then he can go
to the e-way bill portal and select the option โSearch ๏ Update Block Status โ and then enter his/her
GSTIN and see the status. If it is blocked then he/she can use update option to get the latest filing
status from the GST Common Portal and get unblocked.
Still if the system is not unblocking the GSTIN for e-way bill generation, then he can contact the Help
Desk of the GST and raise the complaint to get his/her case resolved.