First, I'm not a Frigidaire tech. I have worked on electrical stoves. BUT since there are High voltage and High current used in stoves I strongly recommend you have a qualified tech service your equipment.
*** The following is for information only ***
* Looking at your elements, it's not the plug in style seen on old 1960's ranges. (yeah, I'm old) The later models use special plugs and newer units are dedicated elements specific to the brand. Replacements, (if found) must be exact. I found this link:
https://c.searspartsdirect.com/lis_png/PLDM/R0102071-00004.png
* Again, check your warranty and call for service.
* Replacing your element(s) may be only part of the problem. I've found bad wires, shorted wires, burnt terminals, cracked connectors, and the most common is rusted out parts. You will need to replace everything that looks remotely bad as they will fail when powered up again. But at this level of damage, it may be better to replace the stove.
Aloha, ukeboy57