Hello ryangriggs,
Welcome to the community! :)
There is no option to select IPoE in the WAN configuration settings of the FVS336Gv3. Let us try this, if ever the current firmware version of the FVS336Gv3 is not yet the latest one, I suggest you to upgrade it to the latest firmware version which is v4.3.5-3. You can download it here. Be reminded to perform a factory reset on the FVS336Gv3 after upgrading the firmware then set it up from scratch.
For the initial setup of the FVS336Gv3, kindly try the steps below:
Note: Make sure there is internet connection when you connect a PC directly to your modem. If there is internet access, connect the WAN port (either WAN 1 or WAN 2 port you prefer to use) of the FVS336Gv3 to the modem.
1. On the web-GUI of the FVS336Gv3, go to Network Configuration > WAN Settings > WAN Setup.
2. In the WAN IPv4 Settings table, click the Edit button for the WAN interface that you want to configure. The WAN IPv4 ISP Settings screen displays.
3. In the section that says Does Your Internet Connection Require a Login?, select No.
3. In the ISP Type section, select Other (PPPoE). On the Idle Timeout, select Keep Connected.
4. In the Internet Address and DNS Servers sections, select 'Get Dynamically from ISP' and 'Get Automatically from ISP' respectively.
5. Click Apply.
6. Check if the Internet LED of the corresponding WAN port you are using turns green. Once it turned green, check if you can access the internet through the FVS336Gv3.
Note: If ever the Internet LED did not lit up green, turn off the FVS336Gv3 and modem. Make sure the modem is completely turned off. Then after 5 seconds, turn on first the modem and wait for it to initialize. Then, turn on the FSV336Gv3. Observe if the Internet LED of the corresponding WAN port you are using turns green.
As reference, access the article below:
Initial Access and Basic IPv4 Internet Configuration
Regards,
DaneA
NETGEAR Community Team