Retevis RT649P / RT49P - Unboxing & First Impressions

Retevis RT21 Walkie Talkies with Earpiece and Mic Set, Adults Long Range 2 Way Radios, Portable FRS Two-Way Radios(2 Pack)

Retevis RB37 Bluetooth Two Way Radio

RB17P Long Range NOAA GMRS Handheld Radio

RB23 IP67 Waterproof GMRS Handheld Radio

Retevis RT22 Walkie Talkies Mini 2W CTCSS/DCS VOX TOT 16CH Two Way Radios(2pcs) 631976687546

Retevis Rt628 Walkie Talkie For Kids Vox Portable 22 Channel Frs Kids Walkie Talkies (Black,2 Pack)

Retevis RS-112 WXRSM Heavy Duty IP54 Speaker Microphone – BSR

Retevis RT22 Walkie Talkies, Mini 2 Way Radio Rechargeable, VOX Handsfree, Portable, Two-Way Radios Long Range with Earpiece, for Family Road Trip

Retevis RT68 UHF Walkie Talkie 2W 1200mAh VOX TOT Alarm Handheld Two Way Radio

My Retevis rt24s fail to interact with my computer (both retevis' program and CHIRP), but are detected by the PC (if I disconnect them, the error is different). There is anything I