I also had to deal with mass deleting the way I did it was:
This
Look at the formula I used you'll have to drag down the formula it should get populated with the URLs
You'll have to adjust the ticket IDs accordingly
Then I multi-selected all those ready URLs > right clicked > more Cell options > open selected links in a new tab
And it all opened up in a new tab triggering to delete all those tickets in one shot
P.s. you'll have to be signed into ITFlow in the same browser for this to work, also this won't work with MS Excel only with Google sheets
If you don't understand anything, don't hesitate to ask me
🙏