Error on custom chains: [BigNumber Error] Argument not a primitive number: 6

[nsonanh]

I added a custom network with these following parameters:

Chain Id: dhealthtestnet
Chain Name: dHealth Testnet
New RPC URL: http://dual-03.dhealth.cloud:26657/
New REST URL: http://dual-03.dhealth.cloud:1317/
Address Prefix: tdh01
Native Denom: tdhp
Coin Type: 118
Decimals: 6

On the browser extension, I was able to make transactions & stake my tokens.
On the mobile app, these error were shown (on transaction page and stake page):

Has anyone faced this before ?
How can we fix this? Is it a wrong config value from the custom network side? If yes how come it can run in the extension?