I’m sorry to hear about your issue.
May I ask you to send me SN of your ROSbot (by private message if you prefer)?
Previously we used to add Sharp distance sensor to ROSbot 2.0, but from more than two years all ROSbot’s have custom-made laser distance sensors using 4x VL53L0X. Of course replacing is possible
Please let me know what model of sensor do you want to use on your own and I will check if connecting them to Robot is possible.