My visit visa expired on 28th April.

 It should be noted that after reviewing your inquiry and legal scrutiny we would like to inform you that The Federal Authority for Identity and Nationality has decided that expatriates may extend the visit or tourist visa of all kinds after their expiry without the need to leave the state at a rate of 600 dirhams for 30 days only twice, regardless of the basic duration of the original visa.
You can contact the TRA through the following link:

emirates id centers