“Procedural reasons” includes extinguishing the bond upon maturity.
As the bond is maturing imminently (12 July 2023),
trading the bond on the secondary markets (BSE in this case) is currently being suspended.
Source: BSE circular dated 21 JUN 2023.
A “record date” of 26 June 2023 implies that whoever is holding the bond on 26 JUN 2023, will be remitted any income receiveable from the bond. Since you purchased the bond on 12 April 2023 and continue to hold it, you should be fine.
Nothing much actually.
Upon maturity the bond is extinguished (automatically debited from your demat account),
and an amount equal to the face-value of the bond x no. of units held by you
is automatically credited to your linked bank account.
Yes. Irrespective of your experience with this bond, IMHO, this is true in the long-term. 
FYI, here’s a topic-thread with insights into purchasing corporate NBFC bonds
and another topic-thread discussing various shady practices prevalent in the NBFC sector.